Contribution to the biology of fresh-water sponges (Spongillidae) /
Old, Marcus C.
Contribution to the biology of fresh-water sponges (Spongillidae) / Marcus C. Old - [S.l. : s.n.], 1933 - 663-679 p. : ill. ; 26 cm - Papers of the Michigan Academy of Science, Arts and Letters ; 17 .
Contribution to the biology of fresh-water sponges (Spongillidae) / Marcus C. Old - [S.l. : s.n.], 1933 - 663-679 p. : ill. ; 26 cm - Papers of the Michigan Academy of Science, Arts and Letters ; 17 .