Organization of cultivated land in Ghadames (pull-out chart from Eldblom, Structure foncière, 1968).

In the late 60s, the Swedish scholar Lars Eldblom published an extremely detailed study of the socio-economic life in the three Libyan oases of Ghadames, Ghat, and Mourzouk. Since life in Libya has changed dramatically since then, his work undoubtedly documents pheno-mena of oasis life that hardly or no longer exist. It is also full of detailed maps and figures, based on painstaking research. Because of its high level of detail it certainly deserves to be better known. The book is:

Eldblom, Lars. 1968. Structure foncière. Organisation et structure sociale. Une étude comparative sur la vie socio-économique dans les trois oasis libyennes de Ghat, Mourzouk et particulièrement Ghadamès. Lund.

He also published an English summary of the book, under the following title (available freely online):

Eldblom, Lars. 1971. Land tenure – social organization and structure: a comparative sample study of the socio-economic life in the three Libyan oases of Ghat, Mourzouk and Ghadamès. Uppsala University: Nordic Africa Institute.

And finally, I have also found an earlier study of his focusing especially on irrigation in the oases of Brak, Ghadames, and Mourzouk:

Eldblom, Lars. 1961. Quelques points du vue comparatifs sur les problèmes d’irrigation dans les trois oasis Libyennes de Brâk, Ghadames et particulièrement Mourzouk. Lund (Lund Studies in Geography 22).