«Schiller», J: Christoph F: v., _and_ «Humboldt», K: W:, _Freiherr_ v.
Briefwechsel. Stuttg., 1830. S.
«Humboldt», K: W:, _Freiherr_ v. Briefwechsel. _See_ «Schiller», J: C.
F: v., _and_ «Humboldt», K: W: v. But see § 240.
When countries are joint authors it is better to make full entries
under each and arrange them as if the country under consideration were
the only one. Each country puts its own name first in its own edition
of a joint work; and the arrangement proposed avoids an additional
complexity under countries, which are confusing enough at the best.
Whether the joint authorship appears in the title or not should make
no difference in the mode of entry; if one name appears on the title,
that should be chosen for the entry; if none, take the most important.
4. When double headings are used distinguish between joint authors of
one work and two authors of separate works joined in one volume. In the
latter case, if there is no collective title, the heading should be the
name of the first author alone and an analytical reference should be
made from the second. (See § 58 _b._)
_Ex._ “The works of Shelley and Keats” would be entered in full under
«Shelley» (both names being mentioned in the title, but Shelley alone
in the heading), and analytically (§ 127) under «Keats». In such cases
a double heading would often mislead.
5. For university theses or dissertations Dziatzko gives the following
rules: