First and second order triangulation 1943-52.
Munsey, D.F.
First and second order triangulation 1943-52. - Khartoum The Sudan Government 1959 - ix,210p. ; 30cm. - Sudan Survey Department Records Volume II .
SUDAN
TRIANGULATION
526.330962
First and second order triangulation 1943-52. - Khartoum The Sudan Government 1959 - ix,210p. ; 30cm. - Sudan Survey Department Records Volume II .
SUDAN
TRIANGULATION
526.330962