00456nam a2200157Ia 4500 210719s1981 xx 000 0 und d eng 331.11 SCHI SCHULTZ (Theodore W) Investing in people: the economics of population quality. Delhi Hindustan Publishing Corporation (India). 1981 xii,173 HB 20 Rs Labour Economics Human resources 212460 212460 0 0 ddc 0 0 ECO AL AL SSS 1996-03-22 20.00 0 331.11 SCHI D00557 2021-07-19 00:00:00 2021-07-19 DB