Collection of Charts exhibits etc of nation building Department for the National Welfare Units of Government. File No. Pub. 13P - 87 /1939 - 1939 - 165 p; H-35 cm; W-22 cm. সচিবালয় রেকর্ডরুম সংগ্রহ (প্রথম পর্যায়) Subjects--Topical Terms: Collection --nation building Department