593.12
C
Cushman, Joseph Augustine, 1881-
Foraminifera ; their classification and
economic use, 2d ed. rev. and enlarged, accompanied
by an illustrated key to the genera of
the Foramenifera, by the same authors.
Sharon [Mass.] 1933.
viii, 349 p. 23 cm. (Cushman laboratory
for Foraminiferal research, Special publication, No 4).
Bibliografía : p. 302-339.