00895cam0 22002531 450 SOBE0003055620130221095655.020130221d1980 |||||ita|0103 baengUSProductivity in the united statestrends and cyclesJohn W. Kendrick and Elliot S. GrossmanBaltimoreLondonJohns Hopkins University press1980X, 172 p.23 cmKendrick, John W.SOBA00006015070103375Grossman, Elliot S.SOBA00006014070774212ITUNISOB20130221RICAUNISOBUNISOB33033742SOBE00030556M 102 Monografia moderna SBNM330000879SI33742rovitoUNISOBUNISOB20130221094946.020130221095006.0rovitoProductivity in the united states1715131UNISOB