TY - BOOK AU - Greenwood, N.H. AU - Edwards, J.M.B. TI - Human environment and natural systems SN - 0878721681 U1 - 301.31 PY - 1979/// CY - California: PB - Wadsworth Publishing Company, Inc., KW - Human population KW - Renewable fuels KW - Sociology KW - Solid wastes ER -