What does PTNO stand for?

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Chicago style: Acronym Finder . S.v. "PTNO." Retrieved February 11 2012 from <a href="http://www.acronymfinder.com/Perturbation-Theory-Natural-Orbital-(PTNO).html">http://www.acronymfinder.com/Perturbation-Theory-Natural-Orbital-(PTNO).html
APA style: PTNO. (n.d.) Acronym Finder. (2012). Retrieved February 11 2012 from <a href="http://www.acronymfinder.com/Perturbation-Theory-Natural-Orbital-(PTNO).html">http://www.acronymfinder.com/Perturbation-Theory-Natural-Orbital-(PTNO).html

Perturbation Theory Natural Orbital

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