00288nam a2200109Ia 4500082003000000100002000030245005900050260003100109300002800140500000500168700000500173  a304.2839260151972bK79.LP  aKohn, Robert E.  aA linear programming model for air pollution controlb  aCambridgebMIT Pressc1978  axvi, 250p. Index, Bibl.  a  a