<!--  Begin bookcatalog.dtd last updated 
      January 2, 2000  -->
<!ENTITY loc "Library of Congress">
<!ELEMENT Catalog (Book+)>
<!ELEMENT Book (Title,Author*,Pub_Record*)>
<!ELEMENT Title (#PCDATA)*>
<!ATTLIST Title ISBN CDATA #REQUIRED>
<!ELEMENT Author (#PCDATA)*>
<!ATTLIST Author Status CDATA #IMPLIED>
<!ELEMENT Pub_Record (Publisher,Pub_Date)*>
<!ELEMENT Publisher (#PCDATA)*>
<!ELEMENT Pub_Date (#PCDATA)*>
<!--  End of bookcatalog.dtd  -->