TY  - BOOK
AU  - Pathak, Ravi
TI  - Science and technology : for UPSC and state PSC civil services exams
SN  - 9789390511563
U1  - 351.076 
PY  - 2024///]
CY  - New Delhi
PB  - Disha Publication
KW  - Competitive Exams
KW  - Science
KW  - Technology
ER  -