RT Journal Article SR Electronic T1 New lecture apparatus for determination of reflection and refraction JF American Journal of Science JO Am J Sci FD American Journal of Science SP 332 OP 333 DO 10.2475/ajs.s3-35.208.332 VO s3-35 IS 208 A1 Stevens, W. L. YR 1888 UL http://www.ajsonline.org/content/s3-35/208/332.abstract AB