NWOSU, Blessing O., and Naomi N.C SAMUEL. 2022. “ACHIEVEMENT MOTIVATION AND SELF-CONCEPT AS PREDICTOR OF ACADEMIC ACHIEVEMENT OF SECONDARY SCHOOL STUDENTS IN BIOLOGY IN ANAMBRA”. UNIZIK Journal of STM Education 5 (1):64-74. https://journals.unizik.edu.ng/jstme/article/view/1498.