http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Schriften zur Erkenntnistheorie. Αγγλικά
the Paul Hertz/Moritz Schlick centenary edition of 1921 with notes and commentary by the editors /
Hermann von Helmholtz ; newly translated by Malcolm F. Lowe ; edited, with an introd. and bibliography, by Robert S. Cohen and Yehuda Elkana.
Περιλαμβάνει βιβλιογραφία και ευρετήριο.
Boston studies in the philosophy of science 37