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References
1.
A large part of this report was published in International Cataloguing, 6(4) 1977, pp. 42-44.
2.For more complete progress reports , see International Cataloguing , 4 (4 ) 1975 , pp. 4 -5 ; 5 (4 ) 1976 , p. 7 ; 6 (2 ) 1977 , pp. 18 -19 .