Edited and abridged version of a study presented at an African seminar on population and economic development, Dar-es-Salam, Tanzania, May 1974, which study has also been published by "Ceres", FAO Review on Development, Rome.

Edited and abridged version of a study presented at an African seminar on population and economic development, Dar-es-Salam, Tanzania, May 1974, which study has also been published by "Ceres", FAO Review on Development, Rome.

Edited and abridged version of a study presented at an African seminar on population and economic development, Dar-es-Salam, Tanzania, May 1974, which study has also been published by "Ceres", FAO Review on Development, Rome.

Edited and abridged version of a study presented at an African seminar on population and economic development, Dar-es-Salam, Tanzania, May 1974, which study has also been published by "Ceres", FAO Review on Development, Rome.

Edited and abridged version of a study presented at an African seminar on population and economic development, Dar-es-Salam, Tanzania, May 1974, which study has also been published by "Ceres", FAO Review on Development, Rome.

Edited and abridged version of a study presented at an African seminar on population and economic development, Dar-es-Salam, Tanzania, May 1974, which study has also been published by "Ceres", FAO Review on Development, Rome.

Edited and abridged version of a study presented at an African seminar on population and economic development, Dar-es-Salam, Tanzania, May 1974, which study has also been published by "Ceres", FAO Review on Development, Rome.

Edited and abridged version of a study presented at an African seminar on population and economic development, Dar-es-Salam, Tanzania, May 1974, which study has also been published by "Ceres", FAO Review on Development, Rome.

Edited and abridged version of a study presented at an African seminar on population and economic development, Dar-es-Salam, Tanzania, May 1974, which study has also been published by "Ceres", FAO Review on Development, Rome.