TY - BOOK AU - International Conference of input- output techniques(7th) (1979) (Austria) ED - International Conference of input- output techniques(7th) (1979) (Austria) TI - Proceedings T2 - United nations Industrial Development Organization U1 - X:89P:(B) p1, N79, M4 PY - 1984/// CY - New York PB - United Nations U S A KW - Work Study ER -