1
Published: 1960
Superior document: Transactions of the American Philosophical Society N.S.,50,6
2
Published: 1987
Superior document: Smithsonian contributions to paleobiology 62
3
Published: [2014]
Superior document: Title is part of eBook package: De Gruyter Princeton Legacy Lib. eBook Package 1980-1999
Links: Get full text; Get full text; Cover