Royds Irmak, D. E. (1975). Beginning scientific english: Book 2. Nelson.
Tohutoru Kātū Chicago (17th ed.)Royds Irmak, D. E. Beginning Scientific English: Book 2. Surrey: Nelson, 1975.
Tohutoro MLA (9th ed.)Royds Irmak, D. E. Beginning Scientific English: Book 2. Nelson, 1975.
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