Crops -- Genetic engineering -- Economic aspects -- United States : The impact of genetically engineered crops on farm sustainability in the United States / Committee on the Impact of Biotechnology on Farm-Level Economics and Sustainability, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council of the National Academies
Crops -- Germplasm resources -- Africa -- Congresses. : Safeguarding the genetic basis of Africa's traditional crops : proceedings of a CTA/IBPGR/KARI/UNEP seminar, 5-9 October 1992, Nairobi, Kenya / edited by A. Putter
1994
1
Crops -- Germplasm resources -- Congresses. : Safeguarding the genetic basis of Africa's traditional crops : proceedings of a CTA/IBPGR/KARI/UNEP seminar, 5-9 October 1992, Nairobi, Kenya / edited by A. Putter
Crops -- Growth -- Statistical methods : Working with dynamic crop models : evaluation, analysis, parameterization, and applications / edited by Daniel Wallach, David Makowski, James W. Jones
2006
1
Crops -- Guyana : Le dragon de Guyane / un film de Philippe Rostan
Here are entered general works on harvesting machines and works on machines for cutting grain --subdivision Harvesting--Machinery under individual crops, e.g. Corn--Harvesting--Machinery