ppbv (suomeksi)

Määritelmät:

(lb, en, sciences) ppb, parts per billion by volume[http://acmg.seas.harvard.edu/people/faculty/djj/book/bookchap1.html CHAPTER 1. MEASURES OF ATMOSPHERIC COMPOSITION] ([http://acmg.seas.harvard.edu/people/faculty/djj/book/ Introduction to Atmospheric Chemistry, by Daniel J. Jacob, Princeton University Press, 1999.])