TY - BOOK AU - Brys,Gilbert ED - International Labour Organization. ED - United Nations Industrial Development Organization. TI - Fibre and micro-concrete roofing tiles : : production process and t ile-laying techniques SN - 9221064077 PY - 1992/// CY - Geneva : PB - International Labour Organization, KW - Roofing, Tile KW - Tiles, Roofing KW - Design and construction KW - Concrete products N1 - "Prepared under the joint auspices of the International Labour Offic e and the United Nations Industrial Development Organization by Gilbert Brys."; Includes bibliographical references : p. (147-149) ER -