TY  - BOOK
AU  - Boyd Donald W.,
TI  - Systems Analysis And Modeling: A Macro-to-Micro Approach with Multidisciplinary Application 
SN  - 8178670259
U1  - 003.3 
PY  - 2001///.
CY  - New Delhi
PB  - Harcourt India Private Limited, 
ER  -