TY - BOOK AU - Harrison,David,1946- TI - Who pays for clean air SN - 0884104516 PY - 1975/// CY - Cambridge, Mass. PB - Ballinger KW - Air KW - Pollution KW - Economic aspects KW - United States KW - Mathematical models KW - Automobiles KW - Pollution control devices KW - Costs N1 - Includes index; Bibliography: p. 161-163 ER -