TY  - BOOK
AU  - Bittner, John R.,
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
TI  - : an introduction 
SN  - 130835358
SN  - 2
PY  - 1980///];copyright 1980.46
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
N1  - Includes bibliographies and index; 5
ER  -