00660nam a2200169 a 450000100100000000500170001000800410002704000250006808200180009310000230011124500800013426000510021430000210026565000690028665100600035565100750041500003486320200930073941.0111020s1965    xxu           000 0 eng d  aDO-SdBNPbspacBNPHU  a978.02bB112t1 aBabcock, C. Merton10aThe american frontier :bA social and literary record /cC. Merton Babcock.  aNew York :bHolt, Rinehart and Winston,c1965.  a452 p. ;c21 cm. 4aVida de pioneros-zOeste (Región{Rpara} (Estados Unidos{Rpara} 4aOeste (Región{Rpara} (Estados Unidos{Rpara}xHistoria 4aOeste (Región{Rpara} (Estados Unidos{Rpara}zExpansión Territorial