000 00302 a2200121 4500
080 _a580:630
_bN 424 P
245 1 _aPrinciples of agricultural botany
_cby A. Nelson
260 _aLondon
_c1946
650 _aAgricultural Botany
100 1 _aNelson, A.
_d
300 _a556 p. & 128 pls.
901 _a72911
999 _c33973
_d33973