Modifiche

|back= Date on the back.

|back= Date on the back.

|guess= Guess date,

|guess= Guess date,

|seller= Dating provided by seller.

|seller= Dating given by the provider.

|copyright= Dating from copyright note.

|copyright= Dating from copyright note.

|backco= Dating from a copyright note on the back.

|backco= Dating from a copyright note on the back.

|google= Dating established by finding the page on Google Books.

|google= Dating established by finding the page on Google Books.

}}

}}