'... [Darwin's] original long manuscript work on "Natural selection" ... made available for the first time in printed form ...' - book jacket.
Bibliography: p.587-629. _ Includes index.
Charles Darwin's 'Natural selection' : being the second part of his big species book, written from 1856 to 1858 by Charles Darwin. ISBN 0521201632. Published by Cambridge University Press in 1975. Publication and catalogue information, links to buy online and reader comments.