RESEARCH AND PRODUCTIVITY IN WHEAT AND MAIZE

[1] *COMM BUR PLANT BR, 1932, PLANT BREED ABSTR

[2] DALRYMPLE DG, 1972, USDA14 FOR EC DEV SE

[3] DdS Price, 1963, LITTLE SCIENCE BIG S

[4] EVENSON R, 1971, 124 YAL U EC GROWTH

[5] EVENSON RE, 1971, RESOURCE ALLOCATION

[6] *FOOD AGR ORG UN, PRODUCTION YB

[7] GRILICHES Z, 1964, AER, V54, P967

[8] HAYAMI, 1971, AGRICULTURAL DEVELOP

[9] MYREN DT, 1969, SUBSISTENCE AGRICULT

[10] PAPADAKIS J, 1952, AGRICULTURAL GEOGRAP

[1] *COMM BUR PLANT BR, 1932, PLANT BREED ABSTR

[2] DALRYMPLE DG, 1972, USDA14 FOR EC DEV SE

[3] DdS Price, 1963, LITTLE SCIENCE BIG S

[4] EVENSON R, 1971, 124 YAL U EC GROWTH

[5] EVENSON RE, 1971, RESOURCE ALLOCATION

[6] *FOOD AGR ORG UN, PRODUCTION YB

[7] GRILICHES Z, 1964, AER, V54, P967

[8] HAYAMI, 1971, AGRICULTURAL DEVELOP

[9] MYREN DT, 1969, SUBSISTENCE AGRICULT

[10] PAPADAKIS J, 1952, AGRICULTURAL GEOGRAP