During searching chemistry and chemical engineering literature in Chinese database retrieval system, in order to sure the searching accuracy and thoroughness, attention should be paid to the use of molecular formula index. This situation is illustrated by several examples in this paper.
孙小勤. 中文化学化工文献检索应注意分子式检索的使用[J]. 现代图书情报技术, 2001, 17(6): 38-39.
Sun Xiaoqin. Care the Use of Molecular Formula Index in Searching Chinese Literature of Chemistry and Chemical Engineering. New Technology of Library and Information Service, 2001, 17(6): 38-39.