Investigations in ecology /
Clements, Frederic E.
Investigations in ecology / Frederic E. Clements - Washington : Carnegie Institution, 1928 - 188-196 p. : ill. ; 27 cm - Carnegie institution of Washington. Year book ; 27 .
Investigations in ecology / Frederic E. Clements - Washington : Carnegie Institution, 1928 - 188-196 p. : ill. ; 27 cm - Carnegie institution of Washington. Year book ; 27 .