1975 Photomap [Jemen] : approx. 1:25'000; Ta'izz - J.Sabir, Y.A.R.

von Steffen, Hans
Zurich : Dept. of Geography, Univ., 1975.

1975 Photomap [Jemen] : approx. 1:25'000; Hayfaan, Al Qubaytah, Yemen Arab Republic

von Steffen, Hans
Zurich : Dept. of geography, Univ., 1975.

1975 Photomap [Jemen] : approx. 1:25'000, Wadi al Barakani, Hajariyah, Yemen Arab Republic

von Steffen, Hans
Zurich : Dept. of Geography, Univ., 1975.

1977 Photomap [Jemen] : approx. 1:25'000,Dimnat al Khadir, Yemen Arab Republic

von Steffen, Hans
Berne : Swiss Technical Co-operaton Service, 1977.

Population geography of the Yemen Arab Republic : the major findings of the population and housing census of February 1975 and of supplementary demographic and cartographic surveys...

von Steffen, Hans.
Beihefte zum Tübinger Atlas des Vorderen Orients / Reihe B: Geisteswissenschaften 39
Wiesbaden : Reichert, 1979.
Umfang/Format: XIX, 179, 131 S., zahlr. Ill. + 8 Kartenbeil. ; 24 cm.

Databank of Yemen's population and housing census, 1975 : countrywide demographic figures by districts and district centres and detailed demographic records of over 10,000 settleme...

von Steffen, Hans, 1948-
Preliminary report - Airphoto Interpretation Team of the Swiss Technical Co-operation Service ; no. 5
Zurich : [Yemen Project Dept. of Geography, University of Zurich], 1977.
Umfang/Format: 261 p. : ill. ; 24 cm.

Vorderer Orient : Bevölkerungsdichte.

Tübinger Atlas des Vorderen Orients Teil A(8): Geographie. 3: Bevölkerung
Wiesbaden : Reichert, 1978.
Umfang/Format: 2 maps on one sheet : col.

Vorderer Orient : Bevölkerungsverteilung.

Tübinger Atlas des Vorderen Orients Teil A(8): Geographie. 2: Bevölkerung
Wiesbaden : Reichert, 1977.
Umfang/Format: 2 maps on one sheet : col.

Vorderer Orient : Städtische und ländliche Bevölkerung.

Tübinger Atlas des Vorderen Orients Teil A(8): Geographie. 4: Bevölkerung
Wiesbaden : Reichert, 1978.
Umfang/Format: 1 map : col.