TY  - BOOK
AU  - Jerram Dougal
AU  - Petford Nick
TI  - Field description of igneous rocks
SN  - 978-0-470-02236-8
U1  - 552.1 
PY  - 2011///
CY  - Chichester
PB  - John Wiley
KW  - Geology-fieldwork
KW  - Igneous rocks-identification
ER  -