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        <p> </p>
        <h2><a name="structure">The structure of the entries</a></h2>
        <p> </p>
        <h3><a name="work">The work concept</a></h3>
        <p>The main catalogue comprises compositions that are complete in structure even though they may not necessarily be so in detail. 
          Fragments of compositions which, so far as is known, were never completed, arrangements of other composers’ works, doubtful compositi