摘要：In 1953, the Yale Medical Library reported the results of studies on the use of recently published journals and on the extent of disappearance of unbound issues (1). The inquiry revealed that "the 'current use' of a journal appears to continue for five years, with the second year after publication being the time of heaviest use." This year is, of course, the year in which the journal is also unavailable during a varying number of weeks while it is at the bindery.
