"United States of America; political and social history; after 1865; social conditions and relations; farmers, peasants, rural population, agricultural workers." . . . . . . . . . . . . . "Forty acres Cesar Chavez and the farm workers"@en . . "Forty acres : Cesar Chavez and the farm workers" . "Forty acres" . . . . . . . . . "Forty Acres. Cesar Chavez and the farm workers. Introd. by C. Chavez"@en . "Forty acres; Cesar Chavez and the farm workers" . . "Verenigde Staten; politieke en sociale geschiedenis; periode na de burgeroorlog; sociale toestanden en verhoudingen; agrariërs en landarbeiders." . . "United States of America; political and social history; after 1865; social conditions and relations; ethnic groups, immigration policy; Spanish- speaking minorities, Chicano's." . . "Verenigde Staten; politieke en sociale geschiedenis; periode na de burgeroorlog; sociale toestanden en verhoudingen; bijzondere aspecten; minderheidsgroepen, immigratiepolitiek; Spaans sprekende minderheden, Chicano's." . . . . "Travailleurs agricoles États-Unis (sud)." . . "Landarbeiter." . . "Kalifornien." . .