-
571
Rearing, nutritional and pathological studies of the silkworm bombyx mori [microform]
Published 1977Visual Material -
572
Effectiveness of selection for yield and its components in rice crosses [microform].
Published 1977Visual Material -
573
An evaluation of mass selection and family selection for corn improvement in a tropical environment [microform].
Published 1977Visual Material -
574
-
575
Estimates of genetic, environmental and phonotypic parameters of traits related to sow productivity [microform].
Published 1977Visual Material -
576
The effects of weed control and planting methods on the yield and growth of lowland rice [microform].
Published 1977Visual Material -
577
-
578
The performance of some improved strains of pigs and various purebreds in the Philippines [microform].
Published 1977Visual Material -
579
-
580