Hill, M.W.Patent documents: anticipated changes which will affect libraries . J. Librarianship, 10 (2) April 1978, 97-118, 146.
2.
Hill, M.W., op. cit, 112.
3.
Carpenter, A.M. , Jones, M. and Oppenheim, C.Consistency of use of the International Patent Classification. International Classification, 5 (I) April 1978 , 30-32.
4.
Hill, M.W., op. cit, 113.
5.
Patents Rules, I978. (SI 1978, No. 2I6) ISBN 0II0832I67. The relevant rule is Rule I9 (2).
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Harman, M.G.Patents and Information. Journal of the Chartered Institute of Patent Agents, 6, December 1976 , 94-113.
