History Rubber industry and trade Agriculture (2) BUSINESS & ECONOMICS (2) Colonial influence (2) Economic aspects (2) Foreign economic relations (2) Indians of South America (2) Medicine (2) Rubber (2) Shamanism (2) Social conditions (2) TECHNOLOGY & ENGINEERING (2) Agent (Philosophy) (1) Agronomy (1) Asian history (1) Crop Science (1) Economic History (1) Foreign relations (1) General (1) Gummiherstellung (1) Gummiindustrie (1) Gummimarkt (1) HISTORY (1) Humanities (1) Industries (1) International economic relations (1) Labor (1) Labor & Industrial Relations (1) Labor movement (1) Labor unions (1) Manufacturing (1) Millennialism (1) Missions (1) Mojo Indians (1) POLITICAL SCIENCE (1) Politics and government (1) Regional and national history (1) Research (1) Rubber plantations (1) Rubber plants (1) Rubber, Artificial (1) Social aspects (1) Socialism (1) Strikes and lockouts (1) Technical & Manufacturing Industries & Trades (1) World War, 1939-1945 (1)