A key to the Pycnogonida of the Pacific coast of North America /
Hedgpeth, Joel W.
A key to the Pycnogonida of the Pacific coast of North America / by Joel W. Hedgpeth - [S.l. : s.n.], 1941 - 253-260 p. : ill. ; 27 cm - Transactions of the San Diego Society of natural history ; 9 .
A key to the Pycnogonida of the Pacific coast of North America / by Joel W. Hedgpeth - [S.l. : s.n.], 1941 - 253-260 p. : ill. ; 27 cm - Transactions of the San Diego Society of natural history ; 9 .