| http://www.w3.org/ns/prov#value | - xaminer-Richard L. Stroup [5 7] ABSTRACT A self-contained bookend-bookrack structure, adjustable in width, and also adjustable in angle of relationship between the vertical ends, so as to accommodate books but more especially ring-binders or binders containing many or thick pasteups wherein the covers are not necessarily parallel but may form either an acute or an obtuse angle when the covers are
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