TY - BOOK AU - Beach, Richard J. TI - Computer graphics: Vol. 25, no. 4, July 1991. SIGGRAPH '91 conference proceedings, 28 July - 2 August 1991, Las Vegas, Nevada SN - 9780201562910 U1 - 006.6 SIG PY - 1991/// CY - New York PB - ; ACM KW - Richard J Beach; Thomas W Sederberg; SIGGRAPH ER -