Some preliminary observations of phenological data as a tool in the study of photoperiodic and thermal requirements of various plant material.
Publisher: The Chronica Botanica Co.
Published: 1948
Place of publication: Waltham, Mass
Language: eng
Number of pages: 143
Subjects: Crops and climate; Plants -- Effect of temperature on
Notes: Cover-title.

"Reprinted for private circulation...from 'Vernalization and Photoperiodism-A symposium', (Lotsya--a biological miscellany...v.1), 'The Chronica Botanica Co., 1948."