ArticlesScientific Apparatus and Laboratory Methods A PRACTICAL OPERATING STAND See allHide authors and affiliations Science 07 Jul 1939:Vol. 90, Issue 2323, pp. 22DOI: 10.1126/science.90.2323.22 Charles S. ApgarFind 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.
Science Vol 90, Issue 232307 July 1939 Table of Contents Print Table of Contents Back Matter (PDF) Front Matter (PDF)
