Home › Authors › B. Usman 👤 B. Usman 3 books Books by B. Usman Aturan bea meterai sebagaimana Aturan bea meterai sebagaimana berlaku sekarang 1980 Pajak-pajak Indonesia Pajak-pajak Indonesia 1977 The income tax ordinance 1944 The income tax ordinance 1944 (as lastly amended and added with Law no. 9 year 1970) 1970