Choudhury, M. Khashruzzaman. <br/><br/>
Outdoor primary education in Bangladesh / 
M. Khashruzzaman Choudhury; A. K. M. Obaidullah. -- 
 - Paris :  Ginebra :  UNESCO;  OIE,  1980. 
 - 60 p. ;  fot. 
 - Experiments and innovations in education ;  40. .
<br/><br/><label>ISBN: </label>9231018167 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>373.3 (549.6) =20 CHO No.40.