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 2257 9 Pbk: £0.75
Biology.