RT Journal Article SR Electronic T1 How to find the key note of auditoriums JF American Journal of Science JO Am J Sci FD American Journal of Science SP 449 OP 451 DO 10.2475/ajs.s3-50.300.449 VO s3-50 IS 300 A1 Cutter, E. YR 1895 UL http://www.ajsonline.org/content/s3-50/300/449.abstract AB