Effects of the different tillage techniques on the efficiency of weed control and nitrogen uptake in transplanted rice [microform].

द्वारा Castroverde, Yolanda LUmanug 1951-
प्रकाशित 1980

The Filipino graduates of the Rice Production Training Program a follow-up study [microform]

द्वारा Castro, Diosdado V. 1934-
प्रकाशित 1977

The Filipino graduates of the Rice Production Training Program a follow-up study

द्वारा Castro, Diosdado V.
प्रकाशित 1977