Argues that the internal organization of collection development and the nature of science and scholarship lead to inevitable gaps in collection development. The structural and intellectual causes of collection development gaps are analyzed, and a number of areas whose literatures are especially vulnerable to being ignored or overlooked by…

Describes the use of core journal network analysis and cocited journal mapping for studying the intellectual structure of scholarly fields and for evaluating journal collections to identify the most important titles in a discipline. Journals in the field of genetics are examined, and the use of spreadsheet software is explained. (31 references)…