- ISBN: 978-3-639-70085-5

Preposition Checker

- ISBN: 978-620-2-31466-4

in Uganda

- ISBN: 978-620-2-31980-5

- ISBN: 978-3-639-51923-5

Learning Differences between Boys and Girls

- ISBN: 978-3-639-66552-9

Traditional ecological knowledge and ecosystem diversity in the Bolivian Andes

- ISBN: 978-3-639-70504-1

- ISBN: 978-620-6-77390-0

Parental factors involved in helping black boys to achieve

- ISBN: 978-3-639-51483-4

- ISBN: 978-613-8-96136-9

Demography, Environment and Business

- ISBN: 978-613-8-92686-3