Chuks. Ph.D ZO, Friday. Ph,D IE, Chukudi Victor. Ph.D N-O, Onyije. Ph.D C, Theresa. Ph.D A, Clifford. O. EFFECT OF STANDARD MATERIALS ON STUDENTS’ ACADEMIC ACHIEVEMENT IN CHEMISTRY IN SENIOR SECONDARY SCHOOLS IN RIVERS STATE. bj [Internet]. 2025 Oct. 26 [cited 2026 Apr. 29];2. Available from: https://bwjournal.org/index.php/bsjournal/article/view/3403