"Directions for Use: The duplicator masters published by the Fideler Company can be used with any spirit or liquid duplicating machine. They can not be used on a gelatintype duplicator. A duplicator master is provided for use with each of the 57 inquiry units in the Inquiring About Freedom textbook. [...] Each duplicator master will produce 200 copies if it is used and stored carefully. [...]"
Edition:Enlarged edition of Boisen's "First Course in German", 1. edition 1885, 30. edition 1894, 35. edition, thoroughly rev., partly re-written, suppl. with material for German prose composition and with tables of declensions and conjugations
