Author: WOLFS Dries - Jos Van MECHELEN :
Title: De bewerking van het diamant.
Description: .: Christelijke Belgische Diamantbewerkerscentrale, 1956, in-8°, 24 x 15.5 cm, frontispiece, 272 pp, 152 ills., 20 pl. h/t, red boards, gilt lettering. A thorough study of cleaving, sawing, cutting and polishing diamond. The authors were "Laureaten van de Arbeid" and taught at technical schools. Text in Dutch, manual on diamond-working. .

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