Burkett, J. Agricultural research index ; a guide to agricultural research including dairy farming fisheries, food, forestry, horticulture and veterinary science - 6 ed. - Harlow, Essex : Longman, 1978 - 2 v. LCCN: 26094 Subjects--Topical Terms: Agricultura--Investigación--Directorios. Dewey Class. No.: 630.72058 / B8 1978