Rücks. der HTS: "This book presented herewith is a reprint of educational material taken from existing textbook matter now in use in American schools and colleges. It is published for use as an aid in instruction in certain educational activities of the armed forces." - Literaturverz. S. 874 - 876
Entered according to the Act of Congress, in the year 1846, by S. Augustus Mitchell, in the clerk's office of the district court of the eastern district of Pennsylvania
Rücks. der HTS: "This book presented herewith is a reprint of educational material taken from existing textbook matter now in use in American schools and colleges. It is published for use as an aid in instruction in certain educational activities of the armed forces." - Literaturangaben
