00651nam a2200205Ia 4500 CTU_173377 210402s9999 xx 000 0 und d 13.5 025.52 K19/Vol.1 Katz, William A. Introduction to refenrence work William A. Katz New York McGraw-Hill, Inc. 1992 References services (Libraries),Reference books,Dịch vụ tham khảo (Thư viện),Sách tham khảo Bibliography,Tài liệu tham khảo Trúc Trung tâm Học liệu Trường Đại học Cần Thơ