Evaluating the Content of The Second Grade Computer Book in The Light of The Skills of Knowledge Economy. Journal Port Science Research, [S. l.], v. 2, n. 3, p. 509–536, 2019. DOI: 10.36371/port.2018.02.3.10. Disponível em: https://jpsr.uruk.edu.iq/index.php/jport/article/view/35. Acesso em: 23 apr. 2026.