The role of trade unions in housing held in Hamburg 17-19 January 1967, final report . - Paris : Organisation for Economic Co-operation and Development (OECD) , 1968 - 207p. : ill. ; 24 cm. - International seminars 1967-1 . Includes index. Subjects--Topical Terms: Trade unionsHousing Dewey Class. No.: 331.833 / OECD