TY - BOOK T1 - Contributions to the mineralogy of the newark gorup in Pennsylvania A1 - Wherry, Edgar Theodore PP - Filadelfia PB - Univ. of Pennsylvania YR - 1910 UL - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.77994 OP - 23 ER -