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Between 1958 and 1963 the bibliography was first
published as a quarterly and then cumulated annually. Since 1964 it is
being published every month and the cumulated every year. But the
regularity of the publication has suffered in between for various
reasons. There are no publication of INB for the period of 1968, 1969 and
1970. For the period of 1994 to 1999, only annual volumes are being
published. 1994 , 1995,1996 and 1997 annual volumes are available on sale. Annual
volumes of 2000, 2001, 2002 , 2003 and 2004 are available for sale.
From June 2000 onwards, all the monthly issues of INB are being published
regularly and are available for subscription.
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