The purpose of the study on
1. for survey of high school students in the beginning. Academic year 2556 (2013) about products of milk that students like to drink
2. In order to know which brands of milk intake and minimal
3. In order to know that the children in the age range 12-15 this year, consuming milk in the quantities required for a day or a week
.
การแปล กรุณารอสักครู่..