Solar Technician
CONVENTIONAL AND NON CONVENTIONAL ENERGY SOURCES (परंपरागत तथा गैर-परंपरागत ऊर्जा के स्रोत)
CONVENTIONAL AND NON CONVENTIONAL ENERGY SOURCES (परंपरागत तथा गैर-परंपरागत ऊर्जा के स्रोत)
SOLAR ENERGY
WIND POWER GENERATION
STUDY OF SUN PATH (IN ENGLISH MEDIUM)