RT Journal Article SR Electronic T1 Development of the lungs of spiders JF American Journal of Science JO Am J Sci FD American Journal of Science SP 119 OP 129 DO 10.2475/ajs.s3-48.284.119 VO s3-48 IS 284 A1 Simmons, O. L. YR 1894 UL http://www.ajsonline.org/content/s3-48/284/119.abstract AB