He took on the work of publication himself , assigning the task of printing to Johann Jakob Lotter , a printer in Leopold 's home town of Augsburg .
Leopold wrote his textbook during the year 1755 , when he was 36 years old .
Leopold took on the work of publication himself , assigning the task of printing to Johann Jakob Lotter , a printer in Leopold 's home town of Augsburg .
Leopold wrote his textbook during the year 1755 , when he was 36 years old .