1988 - [Elektronische Ressource]
.S. Development Assistance
Roger C. Herdman, Assistant Director, OTA
Health and Life Sciences Division
Walter E. Parham, Food and … . . . . . .
Mixed Crop/Livestock Systems Using Small Ruminants . . . . . . . . ,243
Animal Traction … Systems To Reduce Losses . . . . . . . . . . . . . . . . . . . . ..., .,257
Integrated pest Management …