SYSTEMS APPROACH TO A THEORY OF RURAL-URBAN MIGRATION

[11] GULLIVER P, 1957, RHODES LIVINGSTONE J, V21, P59

[12] HAGERSTRAND T, 1957, LUND STUDIES GEOGR B, V13, P132

[13] Hall A. D., 1956, GEN SYST, V1, P18

[14] HERBERLE R, 1938, AM J SOCIOL, V43, P932

[15] KULLDORF G, 1955, LUND STUDIES GEOGR B, V14

[16] LEWIS WA, 1955, THEORY ECONOMIC GROW, P333

[17] Little Kenneth, 1965, W AFRICAN URBANIZATI

[18] MARBLE DF, 1963, PAPERS P REGIONAL SC, V11, P99

[19] MARTY G, 1948, REV I BELLES LETT AR, P159

[20] MASSER FI, 1964, GEOGRAPHERS TROPICS, P229

[11] GULLIVER P, 1957, RHODES LIVINGSTONE J, V21, P59

[12] HAGERSTRAND T, 1957, LUND STUDIES GEOGR B, V13, P132

[13] Hall A. D., 1956, GEN SYST, V1, P18

[14] HERBERLE R, 1938, AM J SOCIOL, V43, P932

[15] KULLDORF G, 1955, LUND STUDIES GEOGR B, V14

[16] LEWIS WA, 1955, THEORY ECONOMIC GROW, P333

[17] Little Kenneth, 1965, W AFRICAN URBANIZATI

[18] MARBLE DF, 1963, PAPERS P REGIONAL SC, V11, P99

[19] MARTY G, 1948, REV I BELLES LETT AR, P159

[20] MASSER FI, 1964, GEOGRAPHERS TROPICS, P229