https://pictures.abebooks.com/isbn/9780444419903-us.jpg Phosphorites on the Sea Floor@By: Baturin, G.N.@Publisher: @Elsevier Science@Print ISBN: 9780444419903, 044441990X@eText ISBN: 9780444419903, 9780080869476, 0080869475@Pages: 342@Format: PDF@Available from $ 72.95 USD@SKU: 9780444419903 Ebooks here: https://ouo.io/LiVLgZL