000 00481nam a2200133Ia 4500
008 150321s9999 xx 000 0 und d
080 _a633.18:631.84
_bKOY-N
100 _aKoyama, Takeo ; Chammek, Chittana ; Niamsrichand, Natee
245 _aNitrogen application technology for tropical rice as determined by field experiments using n tracer technique
260 _c1973
_aTokyo
_bTropical Agriculture Research Center
300 p _a79p.
650 _aNitrogen
942 _cBK
_2udc
999 _c13256
_d13256