TY - GEN AU - Pokharel, J. P. AU - Gosain, P. R. AU - Karmacharya, K. P. TI - Realm of optional mathematics; a practice book with hints and answers for classes IX, X and SLC examination SN - 99946-618-0-9 U1 - 510 CY - Bhaktapur PB - Pustak Sadan, Nepal KW - Mathematics KW - Algebra KW - Trigonometry KW - Statistics KW - Vectors KW - Matrices KW - Optional mathematics N1 - 2008-08-03; M ER -