title: Estimating the demand for library service: theory and practice.
authors.forename: C A
authors.initials: CA
authors.lastname: Casper
mesh_terms: D004467:Economics; D005249:Fees and Charges; D006784:Hospitals, Teaching; D007379:Interlibrary Loans; D007993:Libraries, Medical / Q000706:statistics & numerical data*; D007999:Library Services; D009820:Ohio; D012041:Regional Medical Programs / Q000191:economics*; D012044:Regression Analysis