Motorola (MCM) - 16 Megabit

How do I read the type number?

MCM518165BV-60
^^^---------------- MCM = Motorola Memory
MCM518165BV-60
   ^--------------- Fab Indicator
                    2/3/5 = Available for sale worldwide
                    4     = Not for sale in the USA
MCM518165BV-60
    ^^------------- 18 = 1K refresh
                    17 = 2K refresh
                    16 = 4K refresh
MCM518165BV-60
      ^^----------- Internal Organization: 
                    40 = 4Meg x 4
                    16 = 1Meg x 16
MCM518165BV-60
        ^---------- 0 = Fast Page
                    5 = EDO
MCM518165BV-60
         ^--------- B = ?
                    C = ?
MCM518165BV-60
          ^-------- V = 3,3volt / (blank) = 5volt
MCM518165BV-60
            ^^----- Speed: 50=50ns / 60=60ns / 70=70ns