000 00276nam a2200133Ia 4500
082 _a631.31/AYA
100 _aAyad, G et al.
245 _aCereals: II maize
260 _bIBPGR Secretariat
_aRome
_c1980
300 _a23
650 _aCorn
901 _a2188
942 _2ddc
_cBK
999 _c1917
_d1917