TY  - BOOK
AU  - Singh, Ashok Kumar
TI  - Science & technology : : for civil services examinations 
SN  - 9780070655485
U1  - 500.007 9  
PY  - 2014///.
CY  - New Delhi : 
PB  - McGraw Hill Education (India)Private Limited, 
KW  - Science & technology
KW  - Civil services examination
KW  - Science and technology in india
KW  - Communication technology
N1  - .; Includes glossary
ER  -