PT  - JOURNAL ARTICLE
AU  - O. N. Rood
TI  - On a method of obtaining and measuring very high vacua with a modified form of Sprengel pump
AID  - 10.2475/ajs.s3-22.128.90
DP  - 1881 Aug 01
TA  - American Journal of Science
PG  - 90--102
VI  - s3-22
IP  - 128
4099  - http://www.ajsonline.org/content/s3-22/128/90.short
4100  - http://www.ajsonline.org/content/s3-22/128/90.full
SO  - Am J Sci1881 Aug 01; s3-22