Yochelson, Ellis L.
Mattheva, a proposed new class of mollusks - Washington, D.C. U.S. Geological Survey 1966 - pp. 1-11 láms.
CAMBRICO
MOLLUSCA
Mattheva, a proposed new class of mollusks - Washington, D.C. U.S. Geological Survey 1966 - pp. 1-11 láms.
CAMBRICO
MOLLUSCA
