The Practical Geologist Donald G. MacKay Acclaimed when first published in

Acclaimed when first published in 1977

and cross references between and among related entries combine to provide robust search-and-browse features in the electronic version

but the family is nowhere to be found

experiences and hard-won insights to explore the front lines of our national culture war over marriage

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The Practical Geologist Donald G. MacKay Acclaimed when first published inGeology is destiny understand it and life gets easier. Our ancestors grasped enough about their environment to fashion tools, start fires, erect shelters, and find water. The principles they discovered long ago still apply, and the science behind stronger concrete, usable marble, and more pure metals still stands. The ancients were the first rockhounds out of necessity, and the skills they perfected resonate from medicine to sanitation, from pottery