TY  - BOOK
AU  - Seshagiri Rao, V A
TI  - Step by Step classification: a formula based classification
SN  - 9788193359792
U1  - 025.43 
PY  - 2017///
CY  - New Delhi
PB  - Ess Ess Pub
KW  - formula based classification
N1  - 2 Vol 937, 470 p
ER  -