TY - BOOK AU - Mital, K M TI - Non-conventional energy systems : principles, progress and prospects SN - 81-7544-006-6 CY - New Delhi KW - Alcohol fuels KW - Biogas system KW - Biogas systems KW - Biomass energy KW - Energy KW - Solar air heating and cooling systems KW - Solar photovoltaic systems KW - Solar thermal energy KW - Thermal energy conversion N1 - Includes index ER -