00333nam a2200133   450000100060000000300030000600500170000900800410002603500190006703500180008605000210010424500360012526000380016111479UR20220427180141.0061102|||||||||||||||||||||||||||||||| d  a(janium) 11468  a(janium)11468 4aE169b.O2N3 197910aExploring America s backcountry  bNational Geographic societyc1979