00276     2200097   4500020001300000082001100013100001900024245007900043260004600122300001000168  a10729496  a639.93  a Ness, Gayl D.1 apopulation and the environment:bframework for analysis/cby Gayl D. Ness.  aMichigan:bUniversity of Michigan,c1994.  a36 p.