  In the present article, we present a spectroscopic analysis of 83 field
B-type stars from NOAO Indo-U.S. Library. We calculated the fundamental
parameters e.g effective temperatures, surface gravities, and rotational
velocities using Barbier-Chalonge-Divan (BCD) method and line blanketed
LTE/NLTE model atmospheres. The projected rotational velocity was estimated by
fitting the Mg II4481 {\AA} line profile with theoretical lines calculated from
LTE/NLTE models. The evolutionary masses for the program stars are estimated
using the evolutionary models. In most of the cases, the present study gives
fair agreement with earlier investigations and is even more accurate in some
cases.
