There are 2 titles associated with this person.

@book{ wphp_11205
  author={Mylius,William Frederic},
  year={1810},
  title={The poetical class-book: or, Reading lessons for every day in the year. Selected from the most popular English poets, ancient and modern. For the use of schools. By William Frederic Mylius, author of The Junior Class-book, and School Dictionary of the English Language.},
  publisher={Mary Jane Godwin \& },
  address={London},    }
@book{ wphp_10491
  author={Mylius,William Frederic},
  year={1811},
  title={The first book of poetry for the use of schools: intended as reading lessons for the younger classes. By W. F. Mylius.},
  publisher={Mary Jane Godwin},
  address={London},    }