RT Monograph SR 00 A1 Ausubel, J.H. A1 Grubler, A. T1 Working Less and Living Longer: Long-Term Trends in Working Time and Time Budgets YR 1994 FD 1994-07 SP 23 PB WP-94-099 PP IIASA, Laxenburg, Austria AV Published LK https://pure.iiasa.ac.at/id/eprint/4112/