TY  - BOOK
AU  - William R.Sherma
AU  - Alan B.Gray
TI  - Understanding Virtual Reality
SN  - 0000099234
U1  - 1.539 
PY  - 2008///
CY  - New Delhi
PB  - Elesevier
KW  -  Understanding
KW  -  Virtual
KW  - Computer Science Engineering
KW  - Reality
ER  -