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 2259 5 Pbk: £0.85
Biology.