VERMA P S. (2022). SCIENCE FOR NINTH CLASS PART 3 BIOLOGY (2022.). S CHAND PUBLISHING.
Chicago-čujuhus (17. p.)VERMA P S. SCIENCE FOR NINTH CLASS PART 3 BIOLOGY. 2022. NEW DELHI: S CHAND PUBLISHING, 2022.
MLA-čujuhus (9. p.)VERMA P S. SCIENCE FOR NINTH CLASS PART 3 BIOLOGY. 2022. S CHAND PUBLISHING, 2022.
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