Who propounded conservative, moderate and liberal theories of reference service ?
AWilliam A Katz
BR. Emery
CS.R. Ranganathan
DJames I. Wyer
Answer:
D. James I. Wyer
Read Explanation:
There are three types of Reference services theories presented by James Wyer In 1930. There were Conservative theory, liberal theory and moderate theory.Feb 27, 2009
