Commentary on the principles of thermodynamics by Pierre Duhem

Available for University of the Philippines Diliman via SpringerLink. Click here to access

Trout streams conditions that determine their productivity and suggestions for stream and lake management von Needham, Paul R. (Paul Robert) 1902-1964

A guide to the study of fresh-water biology von Needham, James George, 1868-1956

A Guide to the study of fresh-water biology. von Needham, James

Rainbow trout in Mexico and California, with notes on the cutthroat series von Needham, Paul Robert