00393nam a2200145Ia 450000100060000000800410000602000070004704000130005408200240006724500510009126000580014230000110020054600070021165000290021855357140505s9999    xx            000 0 und d  aNA  cPK-LaUMT  aMAL 621.47025bNAT-  aNational solar energy education directorya2nd  aColorado,USA:bSolar Energy Research Institute,c1980  a198 p.  aEN  aSolar energy-Directories