000			00330nam a2200145 i 4500
999			_c64 _d64
020			_a0879010401
082	0	0	_a574 _bC87
100	1		_aCurtis, Helena.
245	0	0	_aBiology /
250			_a2d ed.
260			_aNew York : _bWorth Publishers, _c1975.
300			_axxv, 1065 p. : _bill. (some col.) ;
650		0	_aBiology.
942			_cBK