J. Ngana has written:
'Preliminary analysis of Kyela floods'
'Small scale irrigation in Coast Region'
'Estimation of annual floods with limited hydrologic data'
'Hydraulic studies downstream of the proposed Stiegler's Gorge Dam'
'Preliminary investigation of the hydrology of Rukwa region'
'The climatology and hydrology of Pugu and Kazimzumbwi coastal forests'
J. J. Holroyd has written: 'Gisela'
J. J. Kariger has written: 'Elemente'
A. J. Sear has written: '\\'
J. J. O'Kelly has written: 'O'Connell calling'
J. J. Sederholm has written: 'Selected works'
J. J. Colter has written: 'A gentle benefactress'
J. J. Shaw has written: 'The valley of Baboons'
J. J. Ridge has written: 'Diet for the sick'
J. J. Lamb has written: 'A nickel jackpot'
A. J. Merak has written: 'Hydrosphere'
J. Bruin has written: 'Kerkvernieuwing'
J A. Coutts has written: 'The accused'