TY  - BOOK
AU  - Yadav, R. C
TI  - Mental mathematics 1 : for class I
SN  - 9788187631408
U1  - 372.7 YAD 
CY  - Gurgaon
PB  - Archna Publications (P) Ltd
KW  - Mathematics -- Problems, exercises, etc. -- Juvenile literature
KW  - Mathematics -- Study and teaching (Elementary)
N1  - Cosmos Bookhive's in front and back of the book cover
ER  -