Reference service
Kumar, Krishan
Reference service - 2nd rev. ed. - India: Vikas Publishing House, 1980 - x, 444p.
Library science
Reference service
D 025.5 / L8;M0
Reference service - 2nd rev. ed. - India: Vikas Publishing House, 1980 - x, 444p.
Library science
Reference service
D 025.5 / L8;M0