IN the last few months a number of very welcome books have been published in the United States on the subject of geophysical prospecting. Of these, the present work fulfils a very useful purpose, as ...

IN prospecting for minerals, oils, water, etc., use can be made of the physical characteristics of the materials near the earth's surface. The methods at present adopted can be divided into four ...

Preface signed: A.C.D. Rivett, chairman of the Australian Geophysical Executive Committee. The field studies were made in selected parts of Australia. PRINCIPLES PRACTICE OF GEOPHYSICAL PROSPECTING ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Gravimeters (gravity meters) are ...