000 00283nam a2200085Ia 4500
001 MPKV111868
008 120911s9999 xx 000 0 und d
245 _aJournal of Agriculture of the University of Puerto Rico Vol. 73 No. 1-4
_c;
260 _aPiedras
_bUniversity of Puerto Rico
_c1989
999 _c75165
_d75165