Wanjau Ruth

Wanjau Ruth is the author of "Impact of Mineral Levels on Soil PH and Non-Leguminous Plants", "Essential Elements and Lead in Males Using Finger Nails and Scalp Hair", "Medicinal Plants and Essential Elements in Them" and "Essential Elements in Watermelons Grown in...

Books by Wanjau Ruth

Medicinal Plants ...
Adongo Odongo
Paperback: $90.00

Impact of Mineral...
Njogu Mwangi
Paperback: $59.00

Essential Element...
Wanja Nthiga
Paperback: $64.00

Essential Element...
Ndiritu James
Paperback: $79.00