GILBERTSON, D. (1989). Practical Ecology For Geography And Biology. Croom Helm.
Cita Chicago Style (17a ed.)GILBERTSON, DD. Practical Ecology For Geography And Biology. Croom Helm, 1989.
Cita MLA (8a ed.)GILBERTSON, DD. Practical Ecology For Geography And Biology. Croom Helm, 1989.
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