Alternatives to gold alloys in dentistry : proceedings of a conference held at the National Institutes of Health, Bethesda, Maryland, January 24-20, 1977 /

Includes bibliographical references.

The assayer's guide : or, practical directions to assayers, miners, and smelters, for the tests and assays, by heat and by wet processes, of the ores of all the principal metals, and of gold and silver coins and alloys, and of coal etc. /

Catalogue of practical and scientific books, published by Henry Carey Baird ... [24 p.] at end.