-
221
Factors affecting productivity and adoption of improved farm practices in rice farms [microform]
Udgivet 1977Visual Material -
222
-
223
Interactions between labor intensity, cultural practices and yields in rice production [microform]
Udgivet 1977Visual Material -
224
-
225
The economics of pump irrigation in low-land rice production, Cabuyao, Laguna, 1964-1969 [microform]
Udgivet 1977Visual Material -
226
Structural changes in rice supply of farmers in the Philippines [microform]
Udgivet 1977Visual Material -
227
Factors associated with the adoption of rice technology in Cotabato [microform].
Udgivet 1977Visual Material -
228
-
229
Patterns of labor utilization on rice farms under three different management arrangements [microform].
Udgivet 1977Visual Material -
230
The effects of detergents on rice a teaching material for environmental education [microform].
Udgivet 1977Visual Material