na INLIS000000000033725 20220320113346 0010-1218015563 220320 g 0 eng Wind and solar energy: Proceedings of the New Delhi Symposium / UNESCO Paris : Unesco, 1956 238 p.: ill.; 26 cm 620.9(252) WIN Index: p. 237-238 (3 bahasa) 620.9(252) WIND ENERGY SOLAR ENERGY 59/57