Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2024. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ Comparison of mass-based and non-mass-based particle measurement systems for ultra-low emissions from automotive sources https://trid.trb.org/View/768825 Tue, 20 Dec 2005 11:32:27 GMT https://trid.trb.org/View/768825