The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

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COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
21st Century Fox - A COM 90130a101 86,792 2,513,528 SH   SOLE   2,297,915 0 215,613
21st Century Fox - B COM 90130a200 401,942 11,780,232 SH   SOLE   10,717,904 0 1,062,328
Accenture Plc. COM g1151c101 976,546 6,378,899 SH   SOLE   6,025,611 0 353,288
Allscripts Healthcare COM 01988P108 97,705 6,715,086 SH   SOLE   5,805,611 0 909,475
Anixter Int'l. COM 035290105 85,257 1,121,801 SH   SOLE   965,616 0 156,185
Applied Ind. Tech. COM 03820c105 47,404 696,089 SH   SOLE   604,039 0 92,050
Argo Group Int'l. COM G0464B107 31,258 507,025 SH   SOLE   437,350 0 69,675
Armstrong World Ind. COM 04247x102 124,354 2,053,738 SH   SOLE   1,771,588 0 282,150
Arrow Electronics Inc. COM 042735100 84,053 1,045,307 SH   SOLE   887,207 0 158,100
Avery Dennison Corp. COM 053611109 81,429 708,938 SH   SOLE   608,808 0 100,130
Bank of NY Mellon COM 064058100 433,270 8,044,373 SH   SOLE   7,326,347 0 718,026
Berkshire Hath. Cl B COM 084670702 724,095 3,652,986 SH   SOLE   3,313,434 0 339,552
Broadridge Financial COM 11133t103 93,976 1,037,492 SH   SOLE   888,562 0 148,930
Cable One Inc. COM 12685j105 52,926 75,248 SH   SOLE   64,175 0 11,073
Carlisle Cos. Inc. COM 142339100 102,400 901,014 SH   SOLE   770,914 0 130,100
Cars.com Inc. COM 14575E105 46,080 1,597,780 SH   SOLE   1,384,855 0 212,925
CenturyLink Inc. COM 156700106 291,283 17,463,009 SH   SOLE   15,886,886 0 1,576,123
Cerner Corporation COM 156782104 467,170 6,932,334 SH   SOLE   6,311,793 0 620,541
Comcast Corp. COM 20030n101 648,134 16,183,117 SH   SOLE   14,730,741 0 1,452,376
Dollar General Corp COM 256677105 630,518 6,779,038 SH   SOLE   6,127,869 0 651,169
Ebay Inc. COM 278642103 500,429 13,259,904 SH   SOLE   12,064,332 0 1,195,572
ePlus Inc. COM 294268107 41,534 552,319 SH   SOLE   477,256 0 75,063
Expeditors Int'l. COM 302130109 365,938 5,656,793 SH   SOLE   5,085,196 0 571,597
Factset Research Sys. COM 303075105 47,620 247,045 SH   SOLE   212,335 0 34,710
Fairfax Financial COM 303901102 3,553 6,700 SH   SOLE   6,700 0 0
FirstCash Inc. COM 33767d105 152,173 2,256,092 SH   SOLE   1,946,297 0 309,795
Genpact Ltd. COM g3922b107 143,203 4,511,750 SH   SOLE   3,890,075 0 621,675
Graham Holdings Co. COM 384637104 106,244 190,282 SH   SOLE   164,320 0 25,962
Greenlight Capital COM g4095j109 32,383 1,611,109 SH   SOLE   1,375,794 0 235,315
Honeywell Int'l. Inc. COM 438516106 631,889 4,120,299 SH   SOLE   3,755,062 0 365,237
Howard Hughes Corp. COM 44267d107 52,597 400,675 SH   SOLE   343,675 0 57,000
Interpublic Group COM 460690100 100,249 4,972,668 SH   SOLE   4,274,718 0 697,950
iShares S&P 500 COM 464287200 14,629 54,415 SH   SOLE   48,695 0 5,720
iShares S&P 600 COM 464287804 261 3,400 SH   SOLE   1,425 0 1,975
JPMorgan Chase COM 46625h100 553,676 5,177,441 SH   SOLE   4,709,882 0 467,559
Kennedy-Wilson Hld. COM 489398107 62,529 3,604,000 SH   SOLE   3,096,850 0 507,150
Liberty Latin America COM G9001E128 84,065 4,226,500 SH   SOLE   4,226,500 0 0
Manpowergroup Inc. COM 56418H100 112,124 889,098 SH   SOLE   758,223 0 130,875
MEDNAX Inc. COM 58502b106 100,368 1,878,148 SH   SOLE   1,682,698 0 195,450
Microsoft Corp. COM 594918104 327,686 3,830,794 SH   SOLE   3,489,170 0 341,624
MSC Industrial Direct COM 553530106 48,323 499,926 SH   SOLE   430,766 0 69,160
Nestle SA ADR COM 641069406 392,836 4,569,449 SH   SOLE   4,168,066 0 401,383
Omnicom Group COM 681919106 371,317 5,098,412 SH   SOLE   4,637,412 0 461,000
Oracle Corp. COM 68389x105 316,818 6,700,881 SH   SOLE   6,039,261 0 661,620
Paccar Inc. COM 693718108 431,517 6,070,863 SH   SOLE   5,529,573 0 541,290
Penske Automotive COM 70959w103 84,690 1,769,910 SH   SOLE   1,514,910 0 255,000
Potash Corp. COM 73755l107 711,268 34,443,955 SH   SOLE   32,579,037 0 1,864,918
Progressive Corp. COM 743315103 558,566 9,917,717 SH   SOLE   9,032,748 0 884,969
Quest Diagnostics COM 74834l100 204,824 2,079,646 SH   SOLE   1,891,436 0 188,210
Robert Half Int'l. Inc. COM 770323103 115,371 2,077,258 SH   SOLE   1,795,958 0 281,300
Ryder System Inc. COM 783549108 97,205 1,154,864 SH   SOLE   994,159 0 160,705
Schlumberger Ltd. COM 806857108 673,134 9,988,633 SH   SOLE   9,368,743 0 619,890
Spdr Tr Unit Ser 1 COM 78462F103 3,292 12,335 SH   SOLE   12,335 0 0
Stanley Black & Deck COM 854502101 516,118 3,041,536 SH   SOLE   2,768,100 0 273,436
TE Connectivity Ltd. COM H84989104 732,449 7,706,749 SH   SOLE   7,267,123 0 439,626
TJX Companies Inc. COM 872540109 597,702 7,817,179 SH   SOLE   7,114,174 0 703,005
TriMas Corp. COM 896215209 77,993 2,915,637 SH   SOLE   2,502,237 0 413,400
Trinity Industries COM 896522109 13,273 354,325 SH   SOLE   312,750 0 41,575
Unilever PLC ADR COM 904767704 252,677 4,565,909 SH   SOLE   4,144,973 0 420,936
UnitedHealth Group COM 91324P102 698,113 3,166,619 SH   SOLE   2,892,625 0 273,994
Valmont Industries COM 920253101 53,934 325,200 SH   SOLE   281,050 0 44,150
ViaSat Inc. COM 92552v100 68,037 908,975 SH   SOLE   780,900 0 128,075
W.R. Berkley Corp. COM 084423102 70,907 989,635 SH   SOLE   851,760 0 137,875
White Mountains Ins. COM g9618e107 97,386 114,399 SH   SOLE   98,578 0 15,821
Woodward Inc. COM 980745103 100,411 1,311,881 SH   SOLE   1,134,235 0 177,646
Zions Bancorporation COM 989701107 43,834 862,356 SH   SOLE   734,941 0 127,415