GSEB, CBSE and university books in Ahmedabad
Ahmedabad's used-book market has three clear cycles: GSEB and CBSE school sets after annual results, engineering semester books after university exams, and commerce or management references throughout the year. Searching by board, class or semester produces a much better match than a broad subject search.
Students from Gujarat University, LD College of Engineering, Nirma University and nearby colleges often use the same standard references, so a book listed by another campus can still match your prescribed list exactly.