TY  - BOOK
AU  - BECK, A.E
TI  - PHYSICAL PRINCIPLES OF EXPLORATIONS METHODS: AN INTRODUCTORY TEXTS FOR GEOLOGY AND GEOPHYSICS FOR STUDENTS
SN  - 0 26393 6
PY  - 1981///
CY  - LONDON
PB  - THE MACMILLAN PRESS LTD
ER  -