'... an extension and development of an article which was published in "Science journal" 6 (12) : 24-30 (Dec. 1970)' - Acknowledgements.
Bibliography: p.55. _ Includes index.
The size of animals by J. L. Cloudsley-Thompson. ISBN 0900541806. Published by Meadowfield Press in 1977. Publication and catalogue information, links to buy online and reader comments.