00538nam a22001577a 4500001001200000003000900012005001700021008004100038040002300079082002600102110004100128245007500169260007000244300003800314650002800352BD-DhSAU 79BD-DhSAU20200109153959.0140106b        bg a|||| |||| 000 0 eng d  cBD-DhSAUaBD-DhSAU  222a630.7150202 / DEA  aDepartment of Agricultural Extension  aAgricultural Extension Manual / cDepartment of Agricultural Extension  aDhaka, Bangladesh:bDepartment of Agricultural Extension, c1999.  axi, 176 -A109 p. :bill. ;c25cm.  aAgricultural extention