Welcome to the Volume 19, Number 4 of TOJDE

From The Editor

Dear TOJDE Readers, Welcome to Volume 19 Number 4 of TOJDE, There are 13 articles and 2 book reviews in October 2018 issue. 34 authors write the articles from 10 different countries. These countries are Brazil, Germany, Ghana, India, Indonesia, Kenya, Malaysia, Philippines, Turkey and USA.