Extensiveness of Problem-Solving Skills by Heads of Schools on Enhancing Teachers’ Job Performance In Public Secondary Schools fo Siha District, Tanzania. int.jour.sci.res.mana [Internet]. 2025 Sep. 12 [cited 2025 Sep. 13];13(09):4324-38. Available from: https://ijsrm.net/index.php/ijsrm/article/view/6649