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 XVIII | [Seal of the depart- 
ment] | Washington | government printing office | 1891 
Second title: United States geological survey | 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 | 1591 
4°, 402 pp. 50 pl. 
Whitfield (Robert Parr). 
United States geological survey | J. W. Powell, director | — | 
Gasteropoda and cepbalopoda | of the | Raritan clays and green- 
j sand marls | of New Jersey | by | Robert Parr Whitfield | 
| [Vignette] | 
L Washington | government printing office | 1591 
4°, 402 pp. 50 pl. 
(Unirep Staves. Department of the interior. (U. 8. geological 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 office | 1891 
4°, 402 pp. 50 pl. 
(Unirep States. Department of the interior. (U.S. geological survey.) 
Monograph XVIII.] 
