กิตติกรรมประกาศ รายงานฉบับนี้สามารถ

Michael medicine publishing It can be carried out successfully without help from a teacher, counselor, teacher, nong NUCH phet train chest that has been consulting in the preparation of the technical information correctly and make it come out completely. Friends school year 5/2 to assist in answering questions and providing information to complete a survey to establish the information in the book.

Acknowledgements
.This report can be performed to complete it by getting help from teacher adviser is teacher Nong nuch Petch outside.And friends, grade 5 / 2. Assist to answer questions and provide information to do a survey to establish information in book form as well.