Modifiche

* same= Dating from a reference on the same page, (a following explanation has to be written, date is quite reliable)

* same= Dating from a reference on the same page, (a following explanation has to be written, date is quite reliable)

* google= Dating established by finding the page on Google Books. (date is certain)

* google= Dating established by finding the page on Google Books. (date is certain)

* book= Dating established by the publication date of the book from which the page is taken. (date is certain)

* book= Dating established by the publication date of the volume from which the page is taken. (date is certain)

* side= Date reported on a section not included in the image. (date is certain)

* side= Date reported on a section not included in the image. (date is certain)

* otherpage= Date reported on another page. (to be used for catalogs and related pages) (date is certain)

* otherpage= Date reported on another page. (to be used for catalogs and related pages) (date is certain)