00614nam a22001937a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001500102100003400117245014200151260004300293300002200336650004000358700002200398CHAP20220817041655.0971013s1967            r     00010     d  a21269  a22241  a26335  cCHAP  a333.72bC500aCiriacy-Wantrup, Sigfrid Von.  aNatural resourcesb: quality and quantity. Papers presented before a Faculty seminar at the University of California, Berkeley, 1961-1965  aBerkeley :bUniv. of California,c1967  a217 p.b: láms.14aRecursos naturalesxConservación.0 aParsons, James J.