Limnological methods /
Welch, Paul Smith, 1882-
Limnological methods / by Paul S. Welch. - New York : McGraw-Hill, 1948 - xviii, 381 p. : ill. ; 24 cm.
Includes bibliograhpies.
Freshwater biology--Research
Limnological methods / by Paul S. Welch. - New York : McGraw-Hill, 1948 - xviii, 381 p. : ill. ; 24 cm.
Includes bibliograhpies.
Freshwater biology--Research
