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The noctuid moth (Eublemma amabilis, Moore), a predator of the lac insect, and its control / by M.P. Misra, P.S. Negi and S.N. Gupta.
- s.n.],
- 1930.
- [S.l. :
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Ants and the lac insect (Laccifer lacca) / by P.S. Negi, M.P. Misra and S.N. Gupta.
- s.n.],
- 1930.
- [S.l. :
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L'agriculture du Congo belge en 1930
- s.n.],
- 1930.
- [S.l. :
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The International labour office and the colonies / by H. Cohen de Boer.
- s.n.],
- 1930.
- [S.l. :