00456nam a2200181Ia 45000030005000000080041000050400013000460410008000590500015000671000029000822450046001112500007001572600035001643000011001996500037002109420012002479990015002591132200817s9999 xx 000 0 und d cCIC-UMAD aeng aTD180bT46 aThomson, Donald N.99467 4aThe economics of environmental protection a1a aEstados UnidosbWinthropc1973 a278 p. aEconomía, medio ambiente99468 2lcccBK c8016d8016