共 50 条
- [1] FACTORS AFFECTING COSTS OF LIBRARY PHOTOCOPYING [J]. SPECIAL LIBRARIES, 1967, 58 (02) : 113 - 113
- [2] REPORT OF PHOTOCOPYING COSTS IN LIBARIES COMMITTEE [J]. LIBRARY RESOURCES & TECHNICAL SERVICES, 1970, 14 (02): : 279 - &
- [7] HIDDEN COSTS [J]. JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION, 1950, 116 (875) : 92 - 96