DP - MPI Library TY - JOUR AU - Norberg, Arthur L. T1 - A Technological Innovation UR - https://www.jstor.org/stable/1696393 T2 - Science SP - Vol. 231, No. 4733 (1986), p. 63-64 PY - 1986 N1 - Copyright: Copyright 1986 The American Association for the Advancement of Science ER -