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    Parts of this package are based on an ANSI C implementation of a
    B+Tree implementation written by Thomas Nieman, Portland, Oregon.
    The files in question are btr.c and btr.h which were heavily
    modified for the purpose of inclusion in this package by the above
    author.

    The original files were extracted from btr.c -- an ANSI C
    implementation included in the source code distribution of

    SORTING AND SEARCHING ALGORITHMS: A COOKBOOK

    by THOMAS NIEMANN Portland, Oregon 
    email: thomasn@jps.net 
    home: http://members.xoom.com/thomasn/s_man.htm

    From the cookbook:

    Permission to reproduce this document, in whole or in part, is
    given provided the original web site listed below is referenced,
    and no additional restrictions apply. Source code, when part of a
    software project, may be used freely without reference to the
    author.

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