Items where Author is "RATNA, RATNA"
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HENGKI, HENGKI and RATNA, RATNA (2023) BUKU AJAR ENGLISH FOR ECONOMIC. Universitas Islam Kalimantan MAB. (Unpublished)
HENGKI, HENGKI and RATNA, RATNA ENGLISH FOR CIVIL ENGINEERING. Universitas Islam Kalimantan MAB. (Unpublished)