Yska, Gerda. creator Martyn, John text London Aslib, Research and Development Department 1976 monographic [1], v, 58 p. ; Cover title: Databases suitable for users of environmental information. "Carried out for the Commission of the European Communities, Directorate-General for Scientific and Technical Information and Information Management." "Contract ENV/4/4/76." Information storage and retrieval systems Environmental protection 025.4/63042 085142113X