00580nam a22001931 4500 1/11065 970917s1980 enk 000 0 eng d 0674461002 11418 DLC GR-PeUP 304.6 SP Spiegelman, Mortimer. Introduction to demography/ Mortimer Spiegelman. Cambridge: Harvard University press, 1980. 514p.: fig., tabl.; 24cm. Index. Bibliography. Demography. INST UNIPILB MAIN 20040709 304.6 SP 00116119 00116119 LOAN 0 1