The aral sea problem

Nefelov, I. I. | Springer Verlag | 1972

Problem of preserving the Aral Sea

Orlov, V. I. / Sokolova, N. V. | Springer Verlag | 1991

Problem of preserving the Aral Sea

Orlov, V. I. / Sokolova, N. V. | Online Contents | 1991

The Aral Sea problem must be solved

Esenov, Sh. E. / Sydykov, Zh. S. / Altunin, V. S. et al. | Springer Verlag | 1992

The Aral Sea Problem Must Be Solved

Esenov, S. E. / Sydykov, Z. S. / Altunin, V. S. et al. | British Library Online Contents | 1992