000 00289 a2200121 4500
080 _a574
_bU 85 T
245 1 _aText book of practical biology
_cby G. Usher
260 _aLondon
_bConstable
_c1970
650 _aPractical Biology
100 1 _aUsher, G.
300 _a208 p.
901 _a118817
999 _c69036
_d69036