RT Journal Article SR Electronic T1 On the magnetic permeability and the maximum of magnetism of iron, steel and nickel JF American Journal of Science JO Am J Sci FD American Journal of Science SP 416 OP 425 DO 10.2475/ajs.s3-6.36.416 VO s3-6 IS 36 A1 Rowland, H. A. YR 1873 UL http://www.ajsonline.org/content/s3-6/36/416.abstract AB