The 4 th Asian-Pacific Astronomy Olympiad (November-December 2008) : . ... Only students did not participated at the IAO-2008 may participate in the APAO-2008 (that is a student may participate in the 13 th IAO or in the 4 th APAO but not in both of these Olympiads). For the 4 th APAO the (age) group of participants to be analogous to IAO groups, rules 4.5.2-4. to be used, i.e.: . ... Dr. Michael G. Gavrilov, Founding Chairman and Coordinator of the Asian-Pacific Astronomy Olympiad (APAO) . ...