Structure of the literature and channels of communication RESEARCH COMMENCES E RESULTS READY FOR COMMUNICATION REPORT PATENT PRELIMINARY Application COMMUNICATION PRIMARY TIME LITERATURE CONFERENCE 「 THESIS PRIMARY INTER EHS JOURNA e TRANSLATION PERSONAL PATENT SECONDARY COMMUNI- Specification LITERATURE CATION INDEXES Document PROCEEDINGS ABSTRACTS retrieval BIBLIOGRAPHIES TERTIARY REFERENCE MATERIALS LITERATURE TEXTBOOKS Information Retrieva 一PRⅣVATE一 RESTR|CTED一 PUBLIC Adapted from: Bottle, R.T. 1973, cientists Information Transer and Literature Characteristics Jourmal of Documentation 29(3): 281-294Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu Spring 2003 TERTIARY LITERATURE Information Retrieval Structure of the literature and Channels of Communication