Douglass, Raymond C.
The Foraminiferal genus Orbitolina in north America / by Raymond C. Douglass. -- Washington : United States Government Printing Office, 1960 - 52 p., [14] h. de lam. + 1 map. -- (Geological Survey Professional Paper ; 333).
América del Norte
Foraminíferos fósiles
563.12(7)
The Foraminiferal genus Orbitolina in north America / by Raymond C. Douglass. -- Washington : United States Government Printing Office, 1960 - 52 p., [14] h. de lam. + 1 map. -- (Geological Survey Professional Paper ; 333).
América del Norte
Foraminíferos fósiles
563.12(7)