@book{ 0-1141346117, title = {Age and correlation of California Paleogene benthic foraminiferal stages}, series = {Professional paper / U.S. Department of the Interior, U.S. Geological Survey}, author = {Poore, Richard Z.}, address = {Washington}, publisher = {US Gov. Print. Off.}, year = {1980}, language = {Undetermined}, url = {https://katalog.ub.tu-freiberg.de/Record/0-1141346117} }