PC\|MACimages.pcmac.org/SiSFiles/Schools/NY/LawrencePublic...your seconds. For example, if the...
5
PC\|MACimages.pcmac.org/SiSFiles/Schools/NY/LawrencePublic...your seconds. For example, if the primary wave arrived at 2:12 P.M. and thirty seconds, and the secondary wave arrived