Review: Fundamentals of Entomology and Plant Pathology, by L. S. PyensonFarraday · The American Biology Teacher1981PDF218 KB
The young Einstein. The advent of relativity: By L. Pyenson. Pp. 257. Adam Hilger, Bristol. 1985. £19.95 ($28.00)Kilmister · Endeavour1985PDF163 KB
Pyenson, Louis, L. Elements of Plant Protection. New York: John Wiley and Sons, Inc., 1951. 538 p. $4.96Science Education1952PDF220 KB
Cathedrals of Science: The Development of Colonial Natural History Museums during the Late Nineteenth Centuryby Susan Sheets-Pyenson;The Romance of Victorian Natural Historyby Lynn L. MerrillRitvo · Victorian Studies1990PDF463 KB
American Public Pension Systems and Civil Service Retirement Plans, by Frederick L. Hoffman ...Frederick Hoffman1912EN