This book, "Robert Mayer und Hermann v. Helmholtz Eine kritische studie von Dr. Th. Gross", by Th.r Gross, is a replication of a book originally published before 1898. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original...
Keine ausf hrliche Beschreibung f r "Robert Mayer und Hermann v. Helmholtz" verf gbar.