- ISBN: 978-3-659-11119-8

A Critical Comparison of the Formation of Ethical Character in Aristotelian and African Ethics

- ISBN: 978-3-8443-8106-1

- ISBN: 978-3-659-33132-9

Use of copper as an antimicrobial agent in reducing the risk of water-borne disease

- ISBN: 978-3-659-14783-8

A set of multidisciplinary reflections and questions on issues close to everyone’s life and his immediate surroundings

- ISBN: 978-3-659-93872-6

- ISBN: 978-3-659-93250-2

- ISBN: 978-3-659-84765-3

Evaluation in the Teaching-Learning Process

- ISBN: 978-3-659-50295-8

Ambiguity and English Speakers

- ISBN: 978-3-659-68763-1

- ISBN: 978-3-8473-7363-6