1929 1929-1939 1931-1939 20thcentury ackerbau agrarpolitik agriculturalinnovations agriculture agricultureandstate agriculturedurable altestestament anthropology antiquities archaeology ausländischerarbeitnehmer bible biblicalteaching business ca california casestudies china co conditionssociales criticism depressions discrimination droogte droughts dustbowlera duststorms economicaspects economics economicsinthebible einwanderer ethnoarchäologie ethnoökologie excavations(archaeology) exploitationsagricolesfamiliales familie famillesrurales familyfarms farms finance food general geschlecht greatdepression greatplains hi histoire history historygreatplains huntingandgatheringsocieties id indiansofcentralamerica indiansofmexico industrialrelations industries innovations interestrates interpretation jobeljahr jubilee(judaism) judaism kreditwesen labor landtenure local manchuria mayas migrantagriculturallaborers minoritystudies money mt nachhaltigkeit neolithisierung nq5310 nv petitesexploitationsagricoles politicalscience politiqueagricole prehistoric racerelations ruralfamilies sabbaticalyear(judaism) sabbatjahr sexrole smallfarms socialaspects socialclasses socialconditions socialconditionsgreatplains socialscience sozialesituation state stofstormen sustainableagriculture trockenheit unitedstates ut vor-undfrühgeschichte west(ak wildbeuter wirtschaftskrise wy) zins