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Heredity and Evolution, Heredity and Variation
This video describes the way to solve problems based on lens formula to cal...
This video describes nature of image formed by partly covered lens
Aids to Vocabulary
उपसर्ग-प्रत्यय
Nouns
Adjectives
वाक्यगत अशुद्धियों का शोधन
मुहावरे एवं लोकोक्तियाँ
लिंग एवं वचन परिवर्तन
काल परिवर्तन