@article {5814, title = {Bibliographic index of American Ordovician and Silurian fossils}, journal = {Smithsonian Institution, United States National Museum. Bulletin}, volume = {92, Volume 2}, year = {1915}, note = {November 1PDF}, pages = {[i-ii]-iv+719-1521+4 pls.}, publisher = {Government Printing Office}, address = {Washington}, keywords = {bivalvia, fossil record, mollusca, ordovician, paleozoic, pterioidea, silurian, taxonomy}, author = {Bassler, Ray Smith} } @article {5813, title = {Bibliographic index of American Ordovician and Silurian fossils}, journal = {Smithsonian Institution, United States National Museum. Bulletin}, volume = {92, Volume 1}, year = {1915}, note = {November 1PDF}, pages = {[i-vi]-viii+1-718}, publisher = {Government Printing Office}, address = {Washington}, keywords = {bivalvia, fossil record, mollusca, ordovician, paleozoic, pterioidea, silurian, taxonomy}, author = {Bassler, Ray Smith} }