00298nam a2200097Ia 4500008004100000040002500041082001800066100002400084245005100108260004100159240215s9999 xx 000 0 und d aNORSU-DumcNORSU-Dum a658.57/H44/c1 aHertz, David Bendel 4aThe Theory and Practice of Industrial Research bMcGraw-Hill Book Company, Inc.c1950