Scheme for conversion of D.C. system in the A.C. System at the P.T.C. Sardah, Rajshahi File No.PC-33/63 - 1963 - 55 p. H-35 cm; W-22 cm.

সচিবালয় রেকর্ডরুম সংগ্রহ (দ্বিতীয় পর্যায়)




Scheme for conversion of D.C. system in the A.C. System at the P.T.C. --1963--Sardah, Rajshahi