Biology an environmental approach 
Perrott, Elizabeth.
American Institute of Biological SciencesBiological Sciences Curriculum StudyAdaptationsHigh school biology, BSCS green version
London J. Murray,
1972
In 5 books
Adapted from 'High school biology BSCS green version'. Chicago: Rand McNally, 1963
Includes bibliographies and index
ISBN 0 7195 2263 3 Pbk: £1.10
Biology.