TY  - BOOK
ED  - Royal Education Council (REC)
TI  - Environmental science: Class nine 
SN  - 9789993692386
PY  - 2015///
CY  - Thimphu
PB  - Royal Education Council (REC)
UR  - http://library.sce.edu.bt/cgi-bin/koha/opac-retrieve-file.pl?id=faea2dece7f7d5d3f65fa6e2b231fc93
ER  -