Question for Mvunga Associates

I'm a student currently pursuing the LLB UNZA programme and I'm in desperate need of the renowned professor Mvunga's book "The Colonial Foundations of Zambia's land tenure systems" 1980 as well as his thesis "Land Law and Policy in Zambia. I have searched for the book but to no avail. i was wondering if there is any way possible the firm could assist me with having access to the book or thesis?? Seeing that Prof. Mnvunga is a partner.