Southern African Customs Union and BLS-Countries (Botswana, Lesotho and Swaziland) - Journal of World Trade View Southern African Customs Union and BLS-Countries (Botswana, Lesotho and Swaziland) by - Journal of World Trade Southern African Customs Union and BLS-Countries (Botswana, Lesotho and Swaziland) 24 3 Journal of World Trade