The result of the development of skills to serve the lower hand in volleyball through coaching to serve the student. school year 6 school backs a Han Warin chamrap. Amphoe Warin chamrap, Ubon Ratchathani
The development of skills to serve มือล่าง in volleyball by training to serve มือล่าง of students 6 school rumors manadee warin chamrap. Warin chamrap District of Ubon Ratchathani province