TY  - BOOK
AU  - Chaturcedi, Jagpat.
TI  - Vaigyanik Udbhavon Ka Itihaas | वैज्ञानिक उद्भावों का इतिहास
U1  - 500 
PY  - 1965///
CY  - Uttar Pradesh 
PB  - Hindi Samiti Soochna Vibhag  
KW  - Natural Sciences and Mathemetics
UR  - https://lucknowdigitallibrary.com/publications/99693v
ER  -