Col. ill. on lining papers.
Originally published: as 'Joe Kaufman's how we are born, how we grow, how our bodies work and how we learn'. New York : Golden Press, 1975.
A wyddoch chi sut mae'ch corff yn gweithio? by Joe Kaufman. ISBN 0904910288. Published by Gwasg y Dref Wen in 1977. Publication and catalogue information, links to buy online and reader comments.