Can any body help me to get an idea about Z12 and Z3 excitons.
thanks in advance,
Gomathi
... 44, 20.6% from 45 to 64, and 9.6% who are 65 years of age or older. The median age is 35 years. For every 100 females there are 96.9 males. For every 100 females age 18 ...