NCTB

Published by

National Curriculum and Textbook Board

69-70, Motijheel Commercial Area, Dhaka-1000.

[All rights reserved by the publisher]

First Print (Bangla version) : September 2005

First Print (English Version) : February 2007

2nd Print (English version) : March 2008

Reprint (English Version) : April 2009

Computer Graphics

Laser Scan Limited

15/2 Topkhana Road, BMA Bhaban.

Cover & Illustrations:

G.M.A Razzaque

Picture Coloured by

Ahmed Ullah

Printing Supervision

Shah Taslima Sultana

Design

National Curriculum and Textbook Board

Website version developed by Mars Solutions Limited