 | Opium poppy – Asia. |
 | Opium poppy – Biological control. |
(14) | Opium poppy – Control – Afghanistan. |
 | Opium poppy – Control – Burma. |
 | Opium poppy – Economic aspects – Afghanistan – Hilmand. |
 | Opium poppy – Herbicide injuries. |
 | Opium poppy – India. |
(2) | Opium poppy – Marketing. |
(2) | Opium poppy – Political aspects – Afghanistan. |
(2) | Opium poppy – Political aspects – Burma. |
 | Opium poppy – Turkey. |
 | Opium trade - Afghanistan - Government policy. |
 | Opium trade – Asia, Central. |
(3) | Opium trade – Afganistan – Economic aspects. |
(10) | Opium trade – Afganistan. |
 | Opium trade – Afghanistan – Interpretation. |
 | Opium trade – Afghanistan – Pictorial works. |
 | Opium trade – Afghanistan – Public opinion. |
(31) | Opium trade – Afghanistan. |
 | Opium trade – Afghanitan – Government policy. |
 | Opium trade – Asia – History. |
(2) | Opium trade – Burma. |
 | Opium trade – Colombia. |
(3) | Opium trade – Economic aspects – Afghanistan – Badakhshan. |
 | Opium trade – Economic aspects – Afghanistan – Hilmand. |
(36) | Opium trade – Economic aspects – Afghanistan. |
(2) | Opium trade – Economic aspects. |
 | Opium trade – India. |
 | Opium trade – Law and legislation – Afghanistan. |
 | Opium trade – Political aspects – Afghanistan. |
 | Opium trade – Political aspects – Asia. |
 | Opium trade – Prevention. |
 | Opium trade – Turkey. |
 | Opium trade. |
 | Opium – Economic aspects – Afghanistan – Hilmand Province. |
(2) | Opium – Prices – Afghanistan – Periodicals. |
 | Opium – Prices – Afghanistan. |
 | Opium – Statistics – Afghanistan - Periodicals. |
 | Opium – Statistics – Afghanistan. |
 | Opium – Statistics – Periodicals. |
(5) | Opium – Statistics. |
 | Ora International Afghanistan – Periodicals. |
(2) | Oral history – Afghanistan – Kabul. |
(3) | Oral history – Afghanistan. |
 | Oral tradition in literature. |
(2) | Oral tradition – Afghanistan – Kabul. |
 | Oral tradition – Afghanistan. |
 | Organic farming – Afghanistan. |
 | Organisations – Afghanistan – Herat. |
 | Organizational change. |