TY - JOUR AU - Fujita, Yukihiko TI - Non-negatiue Solution and its Economic Interpretation for the Leontief Environmental Model T2 - Fukuoka University review of economics SN - 02852772 PY - 2005 DA - 2005/03/00 VL - 49 IS - 3 SP - 303-311 UR - http://ci.nii.ac.jp/naid/110001077525/en/ ER -