PT  - JOURNAL ARTICLE
AU  - Walter, Donald O.
TI  - Letters to the Editor
AID  - 10.1126/science.166.3912.1459-d
DP  - 1969 Dec 19
TA  - Science
PG  - 1459--1459
VI  - 166
IP  - 3912
4099  - http://science.sciencemag.org/content/166/3912/1459.5.short
4100  - http://science.sciencemag.org/content/166/3912/1459.5.full
SO  - Science1969 Dec 19; 166