@book{bhlpg4922242, title = {The international bibliography of electron microscopy }, volume = {1}, url = {https://www.biodiversitylibrary.org/page/4922242}, publisher = {}, author = {New York Society of Electron Microscopists. }, year = {1959}, pages = {Page 46}, } @book{bhlpg49767118, title = {Palaeontology }, volume = {v.40:pt.3-4 (1997:Aug.-Nov.)}, url = {https://www.biodiversitylibrary.org/page/49767118}, publisher = {Palaeontological Association}, author = {Palaeontological Association }, year = {1997}, pages = {Page 881}, }