Commentary VEGETATION MAPPING By Paul B. Sears See allHide authors and affiliations Science 08 Apr 1921:Vol. 53, Issue 1371, pp. 325-327DOI: 10.1126/science.53.1371.325 Paul B. Sears Find 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 above.