000 00315nam a2200121Ia 4500
008 170101s1978 xx 000 0 und d
082 _a630 RIC
100 _aRichardson William Norman
245 0 _aPlants Agriculture & Human Society
260 _bW. A. Benjamin INC.
_c1978
300 _a353 p.
942 _2ddc
_cB
999 _c645366
_d645366