RT Journal Article SR Electronic T1 Small Business R & D JF Science JO Science FD American Association for the Advancement of Science SP 456 OP 458 DO 10.1126/science.215.4532.456-b VO 215 IS 4532 A1 SPESER, PHILIP YR 1982 UL http://science.sciencemag.org/content/215/4532/456.3.abstract AB