| Martin, E.B., 1991. Bitter pill: rhino horn art ground into potions. National Geographic 1991 April: 1, fig. 1
|
|
| Martin, E.B., 1991. The effect of the international ivory bans on Zimbabwe's ivory industry. Swara 14 (6): 26-28
|
|
| Martin, E.B., 1990. Medicines from Chinese treasures. Pachyderm 13: 12-13, figs. 1-2, tabs. 1-2
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