TY  - BOOK
AU  - Parker C C.
AU  -  Turley R V.
TI  - Informationa sources in science and technology :  a practical guide to trasitional and online use
U1  - 2:97(A), L5;2 (2D) 
PY  - 1986///
CY  - London
PB  - Butterworth       
KW  - LIBRARY SCIENCE
ER  -