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Wellisch, H.H.: ¬The cybernetics of bibliographic control : toward a theory of document retrieval systems (1980) 0.03

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Source: Theory and application of information research. Proc. of the 2nd Int. Research Forum on Information Science, 3.-6.8.1977, Copenhagen. Ed.: O. Harbo u. L. Kajberg

Wellisch, H.H.: ¬A new classification of the world's languages (1982) 0.01

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Source: Universal classification I: subject analysis and ordering systems. Proc. of the 4th Int. Study Conf. on Classification research, Augsburg, 28.6.-2.7.1982. Ed.: I. Dahlberg

Wellisch, H.H.: ¬The literature of indexing (1989) 0.00

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Source: Indexing: the state of our knowledge and the state of our ignorance. Proc. of the 20th Annual Meeting of the American Society of Indexers, New York, 13.5.1988. Ed.: B.H. Weinberg

Wellisch, H.H.: ¬The case of the missing subtitle (1981) 0.00

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