TY - BOOK AU - Twidell,John AU - Weir,Anthony D. TI - Renewable energy resources SN - 0419120009 AV - TJ808 .T95 1986 U1 - 553TWI 19 PY - 1986/// CY - London PB - E & FN Spon KW - Renewable energy sources KW - Geology N1 - Includes bibliographies and index ER -