Page 3 - Happy collo book (2)_Neat
P. 3
Preface
In truth, we could not have achieved this electronic
book without strong support from our adviser. We would
like to thank our adviser for her unwavering support.
We apologize if any error is found which was not
deliberately made. If this book can help any person in
providing information, we will feel that the purpose of
this book has been fulfilled. please do not hesitate to
contact us, If you require any further information.
Pitchaya Rangsai 614302004
Malisa Sirihan 614302017
