Book Reviews Cellular Differentiation in Plants and Other Essays. C. W. Wardlaw. Manchester University Press, Manchester, and Barnes and Noble, New York, 1970. vi, 162 pp. $6.50 + See all authors and affiliations Science 20 Nov 1970:Vol. 170, Issue 3960, pp. 841-842DOI: 10.1126/science.170.3960.841-a Arthur W. GalstonFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.