"dunning, f w. "
geophysical exploration: / f.w. dunning - 1 ed. - uk : h.m.s.o. 1970. - "vi, 69p.; 21 cm."
0 11 880061 2
TN269 / .D86 1970
geophysical exploration: / f.w. dunning - 1 ed. - uk : h.m.s.o. 1970. - "vi, 69p.; 21 cm."
0 11 880061 2
TN269 / .D86 1970