Planned change in farming systems:
Planned change in farming systems: progress in on-farm research/
edited by Robert Tripp
- Chichester: John Wiley, c1991.
- x, 348p. : ill. ; 25cm.
Includes bibliographical references and index
0471934178
Agricultural systems--Developing countries
Farm management--Developing countries
S540.O53 / P58 1991
630.7 / PLA
Includes bibliographical references and index
0471934178
Agricultural systems--Developing countries
Farm management--Developing countries
S540.O53 / P58 1991
630.7 / PLA