An atlas of Secchi disc transparency measurements and Forel-Ule color codes for the oceans of the world. (1970) (20157807209)

---

Size: 1237px × 2019px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ancient, book, bygone, copy, cover, editorial, historic, history, illustration, news, nostalgia, nostalgic, photo, photograph, photography, space, stock, textbook, vintage