The reverse of the title page should have all of the copyright information.
The copyright page of a book is typically on the reverse of the title page.
The copyright and catalog-in-publication data should be on the reverse of the title page.
The copyright page is generally on the reverse of the title page rather than on the back of the book. It includes copyright and printing information.
In the front of a book. In small words.
Try Amazon, it will let you look inside the book.
all of above.
inside the jacket. or just before the table of contents
The copyright is held (or at least claimed) by the state of Bavaria. However, it will expire seventy years after Hitler's death.
Each book has its own copyright information.
Copyright fees in the US range from $30 USD to $220 USD.
The national library of the country in which the book was published likely has information on file.
Once you have written a book, it is copyright to you. All writers copyright their own books.