TY  - BOOK
AU  - Morse,Philip McCord
TI  - Library effectiveness: a systems approach 
SN  - 0262130386
PY  - 1968///
CY  - Cambridge, Mass.
PB  - The M.I.T. Press
KW  - Library science
KW  - Mathematical models
N1  - Bibliography: p. 202-203
ER  -