This is the front matter of vol. 70, no. 422/423.
How to Cite
Please contact the Editor-in-Chief: email@example.com, should you have any questions on copyright for your submission.
This research journal is for Educational and Knowledge development purposes.
All material published on this site complies with our copyright and terms as described by the Attribution-NonCommercial-NoDerivaties 4.0 International (CC BY-NC-ND 4.0)