Close Packings Feb 2012 5-B671532B-12bClose packingE-2E-3G-1Lec R 16lec R 24aLec R 25aLec R 26aLec R 27aLec R 29aLec R 43aLec R 44aLec R 46aLec R 50aLec R 69poster partS8San 26San S 2Scan 5trival-1Trivalent0_Page_1000_Page_1010_Page_1030_Page_1060_Page_28600011a1-new4