TY  - BOOK
AU  - Bajracharya, B.C.
TI  - Essential optional mathematics
U1  - 510 B168e 2069 
PY  - 2069///
CY  - kathmandu, Nepal
PB  - M.K. Publishers  Distributors
KW  - Mathematics
UR  - http://103.69.125.248/cgi-bin/koha/opac-retrieve-file.pl?id=bb1240232d193e484b633154a6f888ec
ER  -