Ijok Adibe Njoku (PhD) M, Ese Konyeme (PhD) J. ATTITUDE OF BIOLOGY TEACHERS TOWARD IMPROVISATION OF INSTRUCTIONAL MATERIALS IN SECONDARY SCHOOLS IN ETCHE LOCAL GOVERNMENT AREA, RIVERS STATE, NIGERIA. bj [Internet]. 2026 May 10 [cited 2026 May 11];. Available from: https://mail.bwjournal.org/index.php/bsjournal/article/view/3998