TY  - GEN
AU  - Rao, Digumarti Bhaskara
TI  - International encyclopaedia of science and technology education, Vol.5: science and technology education for all
SN  - 8171415482
U1  - 503 
PY  - 2000///
CY  - New Delhi
PB  - Discovery
KW  - SCIENCE
ER  -