TY - GEN TY - GEN T1 - Direct use of the sun's energy T2 - Trends in science A1 - Daniels, Farrington LA - eng PP - New Haven PB - Yale University Press YR - 1964 UL - https://kansalliskirjasto.finna.fi/Record/fikka.190113 OP - 374 KW - Solar energy. ER -