वास्तवचन्द्रश्रृङ्गोन्नतिसाधनम् - Vastavacandra Srngonnati Sadhanam of M. M. Sudhakar Dvivedi (An Old and Rare Book)
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वास्तवचन्द्रश्रृङ्गोन्नतिसाधनम् - Vastavacandra Srngonnati Sadhanam of M. M. Sudhakar Dvivedi (An Old and Rare Book) - Krsnacandra Dvivedi - A unique text addressing practical aspects of astronomy and mathematics.