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Natural resource systems analysis ecological and socio-economic systems and sensitivity analysis for the conservation and management of forest ecosystems and natural resources in S... par Bossel, Hartmut

Conservation management of freshwater habitats lakes, rivers and wetlands par Maitland, P. S.

Species composition and length-weight relationship of fishes in Tigum River, Iloilo, Philippines par Denusta, Pastor Jones T., Abuna, Edna P., Maliao, Bernice P., Mendoza, Joselito Trandio P.

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