Top-level element for the NCBI Historical DTD. A “book” as defined in this DTD covers a variety of STM monographs and reference books, largely biomedical in subject, that may include books, pamphlets, compilations, and encyclopedias.
<!ELEMENT book %book-model; >
The following, in order:
<book>
<book-meta>...</book-meta>
<digital-edition-meta>...</digital-edition-meta>
<body>...</body>
</book>
historical.dtd