Agricultural systems -- Indonesia -- Flores : Agriculture and population pressure in Sikka, Isle of Flores : a contribution to the study of the stability of agricultural systems in the wet and dry tropics / Joachim K. Metzner
Agricultural systems -- Laos. : Upland farming systems in the Lao PDR - problems and opportunities for livestock : proceedings of an international workshop held in Vientiane, Laos, 18-23 May, 1997 / editors: E.C. Chapman, Bounthong Bouahom and Peter Kurt Hansen
Agricultural systems -- Nigeria -- Congresses. : Livestock systems research in Nigeria's subhumid zone : proceedings of the second ILCA/NAPRI Symposium held in Kaduna, Nigeria, 29 October-2 November, 1984 / edited by R. von Kaufmann, S. Chater, R. Blench
Agricultural systems -- Research -- Developing countries. : Agricultural systems research for developing countries : proceedings of an international workshop at Hawkesbury Agricultural College Richmond, N.S.W., Australia 12-15 May 1985 / editor: J.V. Remenyi
Agricultural systems -- Research -- United States -- Congresses : Ecosystem services : charting a path to sustainability : interdisciplinary research team summaries : conference, Arnold and Mabel Beckman Center, Irvine, California, November 10-13, 2011
Agricultural systems -- United States : Toward sustainable agricultural systems in the 21st century / Committee on Twenty-First Century Systems Agriculture, Board on Agriculture and Natural Resources, Division on Earth and Life Sciences
--subdivisions Virus diseases and Viruses under individual animals and groups of animals, e.g. Cattle--Virus diseases; Cattle--Viruses; Fishes--Virus diseases; Fishes--Viruses
Agricultural wages -- Law and legislation : The Agricultural Holdings (England) Acts, 1883 to 1900 : with explanatory notes and general forms : also the Board of Agriculture and County Court rules and forms : together with the Allotments and Cottage Gardens Compensation for Crops Act, 1887 / by Aubrey John Spencer
1906
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Agricultural wages -- Law and legislation -- Great Britain : The Agricultural Holdings (England) Acts, 1883 to 1900 : with explanatory notes and general forms : also the Board of Agriculture and County Court rules and forms : together with the Allotments and Cottage Gardens Compensation for Crops Act, 1887 / by Aubrey John Spencer