A device for measuring soil frost
By: James H. Patric and Burley D. Fridley.
Contributors: Fridley, Burley D.; Northeastern Forest Experiment Station (Radnor, Pa.); United States. Forest Service.
Series: USDA Forest Service research note NE -- 94.; Research note NE -- 94.
Publisher: Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station
Published: 1969
Place of publication: Upper Darby, Pa
Language: eng
Subjects: Frost -- Measurement; Frozen ground; Measuring instruments
Notes: References: p. 7.