TY  - BOOK
TI  - Geology and earth sciences sourcebook for elementary and secondary schools
U1  - 551.1 
PY  - 1962///
CY  - New YorkU.S.A.
PB  - HoltRinehart and Winston
KW  - Geologia
N1  - Incluye: índices, apéndices; BIBLIOTECA: UACH-FING
ER  -