TY  - BOOK
AU  - Robertson,F.
TI  - Physical Geology. Manual of Laboratory Exercises
T2  - Mineral Assessment Jaarverslagen
SN  - 0 11 881262 9
PY  - 1965///
CY  - Minneapolis
PB  - Burgess Publishing Company
KW  - Celestite
KW  - England
KW  - Bristol Region (Avon)
ER  -