000			00360nam a22001457a 4500
041			_aeng
082			_a590 LAU
100			_aLaubenfels, M W De
245			_aLife science _c M.W. De Laubenfels
250			_a3rd ed.
260			_a New York : _bPrentice-Hall, _c1949.
300			_aiv, 407p. ; _c29 cm.
500			_aIncludes index
650			_aBiology
999			_c420077 _d420012