| Literature DB >> 14057367 |
Abstract
Edge-notched cards in an inverted system of indexing may be used satisfactorily to analyze research data which concern a small series of individuals but a large number of highly variable characteristics in a short-term research project.Keywords: ABSTRACTING AND INDEXING; PUNCHED-CARD SYSTEMS; RESEARCH
Mesh：
Year: 1963 PMID： 14057367 DOI： 10.1126/science.142.3589.227
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728