TY  - BOOK
AU  - Singhal; Om Prakash,Asha Rani and Priyadarshani;Pritama
TI  - Grah vigyan ke mul sidhant
U1  - 640 H74;1 
PY  - 1974///
CY  - Allahabad
PB  - Kitab Mahal
KW  - Home Science
ER  -