3 ms·
http://www.afhsc.mil/documents/pubs/msmrs/2014/v21_n10.pdf#Page=14 http://www.afhsc.mil/documents/pubs/msmrs/2014/v21_n10.pdf#P... see para #1, page 2
by 001sky 12y ago
http://www.afhsc.mil/documents/pubs/msmrs/2014/v21_n10.pdf#Page=14 http://www.afhsc.mil/documents/pubs/msmrs/2014/v21_n10.pdf#P...
see para #1, page 2