Urea and substituted ureas synthesis implemented with the process of carbon dioxide capture by ammonia and amines

- ISBN: 978-3-659-75072-4

Empirical Analysis of Oil and Gas Firms

- ISBN: 978-3-330-05177-5

- ISBN: 978-3-659-96898-3

The solutions of the Millennium Problem P vs NP in computational complexity and the Millennium problem in fluid dynamics

- ISBN: 978-620-4-72562-8

Collection of articles

- ISBN: 978-620-0-00611-0

- ISBN: 978-620-5-50805-3

Updated May 2022 to include food digester

- ISBN: 978-620-4-75173-3

Of Local Government Areas in Cameroon:A Legal Perspective

- ISBN: 978-620-4-97818-5

- ISBN: 978-620-6-15311-5

The Analysis of Themes and Narrative Techniques as used in The Hyena's Wedding by John Rusimbi

- ISBN: 978-620-6-15723-6