PT  - JOURNAL ARTICLE
ED  - , 
TI  - SCIENTIFIC NOTES AND NEWS
AID  - 10.1126/science.88.2291.493-a
DP  - 1938 Nov 25
TA  - Science
PG  - 493--496
VI  - 88
IP  - 2291
4099  - http://science.sciencemag.org/content/88/2291/493.2.short
4100  - http://science.sciencemag.org/content/88/2291/493.2.full
SO  - Science1938 Nov 25; 88