000 00273nam a2200097Ia 4500
100 _aBryoughton Edge A B & Laby T H
245 _aPrinciples and Practise of Geophysical Prospecting
260 _bCambridge Univ Press, U K
082 _aH/N31/B09917
300 _app 372; 28*22
999 _c29213
_d29213