00685cam a22002411 4500 af 48004536 DLC 20260227110908.0 940523s1947 gw a b 000 0 ger c af 48004536 (OCoLC)30479339 Engineering Societies Library IEN IEN DLC premarc TA403 .G65 691 Graf, Otto. Die Baustoffe, ihre Eigenschaften und ihre Beurteilung. Stuttgart, K. Wittwer, 1947. xii, 191 p. illus. 26 cm. Bibliographical footnotes. Building materials. Building materials Testing. 6098 6098