Temperatures of natural waters in Pennsylvania
By: Prepared in cooperation with U. S. Department of interior, Geological survey.  John W. Mangan, district engineer.
Contributors: Geological Survey (U.S.)
Published: 1946
Place of publication: Harrisburg
Language: eng
Number of pages: 222
Subjects: Rivers -- Pennsylvania.; Rivers -- Temperature.
Notes: At head of title:  Commonwealth of Pennsylvania. Dept. of forests and waters.