TY - CPAPER AU - GRIGORE IOAN PIROSCA TI - A DOCTRINAL PERSPECTIVE OF THE US ENVIRONMENTAL ECONOMICS IN 2000S T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION PY - 2015 SP - 3 EP - 10 DO - 10.5593/sgem2015/b53/s21.001 PB - Stef92 Technology ER -