000 00315nam a2200133Ia 4500
008 191031s9999 xx 000 0 und d
100 _aSalmen
245 4 _aThe principles and practice of agricultural research
260 _bLeonard hill
260 _c1964
365 _b302.40
500 _aw.o
942 _cBK
999 _c195435
_d195435