1988 - [Elektronische Ressource]
, small-scale irrigation, soil and water management,
and the improved use of animals. As a result, it seems clear that low … . . . . . . . . . . . . . . . . . . ., .161
Soil and Water Management . . . . . . . . . . . . . . . . . . . . . . ,.,.., ....161
Improving Soil Fertility … Systems To Reduce Losses . . . . . . . . . . . . . . . . . . . . ..., .,257
Integrated pest Management …