RT Journal Article SR Electronic T1 On phosphatic guano islands of the Pacific Ocean JF American Journal of Science JO Am J Sci FD American Journal of Science SP 224 OP 243 DO 10.2475/ajs.s2-34.101.224 VO s2-34 IS 101 A1 J. D. Hague YR 1862 UL http://www.ajsonline.org/content/s2-34/101/224.abstract AB