RT Journal Article SR Electronic T1 Notes on the geology of Florida; two of the lesser, but typical phosphate fields JF American Journal of Science JO Am J Sci FD American Journal of Science SP 497 OP 503 DO 10.2475/ajs.s3-45.270.497 VO s3-45 IS 270 A1 Lawrence Clement Johnson YR 1893 UL http://www.ajsonline.org/content/s3-45/270/497.abstract AB