Who expanded Wyers theory in 1960 by characterizing reference service as –Minimum, Middling and Maximum.
A. F.W. Lancaster
B. S.R. Ranganathan
C. William A. Katz
D. S. Rothestein
Answer:D
Who expanded Wyers theory in 1960 by characterizing reference service as –Minimum, Middling and Maximum.
A. F.W. Lancaster B. S.R. Ranganathan C. William A. Katz D. S. Rothestein