PT  - JOURNAL ARTICLE
AU  - Guyer, Ruth Levy
TI  - <em>This Week in</em> Science
AID  - 10.1126/science.247.4939.139
DP  - 1990 Jan 12
TA  - Science
PG  - 139--139
VI  - 247
IP  - 4939
4099  - http://science.sciencemag.org/content/247/4939/139.short
4100  - http://science.sciencemag.org/content/247/4939/139.full
SO  - Science1990 Jan 12; 247