TY  - BOOK
AU  - Kunjunni Varma
AU  - à´àµà´àµà´àµà´£àµà´£à´¿à´µàµ¼à´® 
AU  - Sivasankaran, M Ed.
TI  - à´ªà´°à´¿à´£à´¾à´®à´ à´à´¨àµà´¨à´¾àµ½
U1  - 576.8 
PY  - 2019///
CY  - Thrissur
PB  - Kerala Sasthra Sahithya Parishad
KW  - Malayalam popular science
ER  -