00511nam a2200157Ia 4500 0000013522 20251012174527.0 950220s1966 mdu 000 0 eng d 0801813026 9780801813023 338.4779 C418 Economics of outdoor recreation by Marion Clawson and Jack L. Knetsch. Baltimore Johns Hopkins Press c1966. xx, 328 p. 20 cm. Recreaciâon al aire libre Aspectos econâomicos Estados Unidos. 5402 5402 0 0 0 0 KEM KEM 2012-12-07 0 0000006137 2025-10-12 08:35:28 2025-10-12 OS