00343nam a2200121Ia 4500082002500000100001600025245006000041260003400101300002000135490005600155500000500211700000500216  a519.5024574bW366.TN  aWebb, G. F.  aTheory of nonlinear age-dependent population dynamicsb  aNew YorkbMarcel Dekkerc1985  avi, 294p. Index  aPure and Applied Mathematics (Marcel Dekker)v v.89  a  a