TY  - BOOK
AU  - Liu, Jia
AU  - Rikowski, Ruth(Ed.)
TI  - The evaluation of worldwide digital reference services in libraries
SN  - 9781843343097
U1  - 025.52 
PY  - 2007///
CY  - Oxford
PB  - Chandos
KW  - Electronic Reference Services (Library)
ER  -