Series title. 
Author title. 
Title for subject entry. 
LIBRARY CATALOGUE SLIPS. 
United States. Department of the interior. (U.S. geological survey.) 
Department of the interior | — | Monographs | of the | United 
States geological survey | Volume XVITT | [Seal of the depart- 
ment] | Washington | government printing office | 1801 
Second title: United States geological surwey | J. W. Powell, 
director | — | Gasteropoda and cephalopoda | of the | Raritan 
clays and greensand marls | of New Jersey | by | Robert Parr 
Whitfield | [Vignette] | 
Washington | government printing office | 101 
4°, 402 pp. 50 pl. 
Whitfield (Robert Parr). 
United States geological survey | J. W. Powell, director | — | 
Gasteropoda and cephalopoda | of the | Raritan clays and green- 
sand marls | of New Jersey | by | Robert Parr Whitfield | 
[Vignette] | 
Washington | government printing office | 101 
49, 402 pp. 50 pl. . 
[UNITED States. Department of the interior, (UL OS. yealoyecal survey). 
Monograph XVIII. | 
United States geological survey | J. W. Powell, director | — | 
Gasteropoda and cephalopoda | of the | Raritan clays and green- 
sand marls | of New Jersey | by | Robert Parr Whitfield | 
[ Vignette ] | 
Washington | government printing oflice | 1°01 
4°, 402 pp. 50 pl 
[UNITED Srares. Department of the interior, (U.S. geological survey.) 
Monograph XVIII] 
