In the case of a book published abroad in the English language before
publication in the United States, the deposit in the Copyright Office
at Washington, not later than thirty days after its publication
abroad, of one complete copy of the foreign edition, with a request
for the reservation of the copyright, and a statement of the name
and nationality of the author and of the copyright proprietor, and
of the date of the publication of the book, secures to the author or
proprietor an _ad interim_ copyright, which has all the force and
effect given by copyright, and extends until the expiration of thirty
days after such deposit in the Copyright Office. Whenever, within
the period of this _ad interim_ publication, an authorized edition
of the book is published within the United States in accordance with
the manufacturing provisions specified in the American copyright law,
and when the provisions of the American law as to deposit of copies,
registration, filing of affidavit, and the printing of the copyright
notice have been duly complied with, the protection is then extended
over the full term.