TY  - BOOK
AU  - NCERT
TI  -  Science : :Textbook for Class IX 
SN  - 81-7450-492-3
U1  - 500 N213S 
PY  - 2006///
CY  - New Delhi
PB  - :NCERT
KW  -  Science-textbook-class 9th
UR  - https://ncert.nic.in/textbook.php?iesc1=ps-12
ER  -