Academia.edu no longer supports Internet Explorer.
To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser.
Followers
21
Following
14
Mentions
Public Views
Related Authors
Universidad Autonoma de Nayarit -Mexico-
Universidade Metodista de Angola
Enter the email address you signed up with and we'll email you a reset link.
Uploads
Papers by Edvaldo Constantino