TY  - BOOK
AU  - Petrak, F
TI  - Rupappedutthal
U1  - 621.811 
PY  - 1972///
CY  - Thiruvananthapuram
PB  - State Institute of Languages
KW  - General Stack
KW  - Engineering
KW  - Applied Physics
KW  - Generalia
ER  -