While items in this list normally function as form subdivisions, most of them may also function as topical subdivisions depending on whether the item itself is in that format, or whether it discusses that format. (Current with 14th ed. of "Free-floating subdivisions : an alphabetical index")
This tool will take bibliographic metadata for a citation and produce a "COinS", i.e. a snippet of HTML that can be placed on a webpage and processed by web tools. The COinS generator also has a built-in link-resolver, so you can generate a COinS by taking any OpenURL query string and appending it to the base URL http://generator.ocoins.info/.