000 00301nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aIRRI
245 0 _aConstraints to High Yields on Asian Rice farms
260 _bIRRI
260 _c1977
365 _b0.00
650 _aAgronomy
942 _cBK
999 _c237942
_d237942