00936nam a2200277 i 4500 1767839 BD-DhUL 20150113111759.0 761229s1975 onc b 100 0 eng 76379929 C75-9374-9 $5.00 DLC DLC DLC BD-DhUL n-cn-on S401 .A47 630 AGR Agriculture in the whirlpool of change : papers presented at the Centennial Symposium, Ontario Agricultural College, University of Guelph, October 17, 18, 1974. [Guelph], Ont. : Ontario Agricultural College, c1975. viii, 232 p. : graphs ; 24 cm. Includes bibliographical references. Ontario Agricultural College. Agriculture Congresses. Ontario Agricultural College. 7 cbc orignew 4 ncip 19 y-gencatlg ddc BK 30148 30148 0 0 ddc 0 630_000000000000000_AGR 0 NFIC 57123 DUSL DUSL GEN 2015-01-13 purchased 630 AGR 306823 2015-01-13 2015-01-13 BK