1-4 of 4 Books

Biodiversity in agroecosystems
By Wanda W. Collins,Calvin O. Qualset

Livestock farming systems
By International Symposium on Livestock Farming Systems (5th 1999 Posieux, Switzerland)

The Global Food Crisis Governance Challenges And Opportunities
By Marc J. Cohen

Higher-yielding human systems for agriculture
By Whyte, William Foote