Forestry for people and nature: field research and theory on environment and development in the Cagayan Valley, Philippines. por CVPED

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... por Bossel, Hartmut

Ghost bears exploring the biodiversity crisis por Grumbine, R. Edward

European Engineering Research and Technology Transfer Congress Eurotech Direct 91 : papers presented at a series of seminars

Global climate change and life on earth

Principles of energy conversion por Culp, Archie Jr., W.

Plant engineers and managers guide to energy conservation por Thumann, Albert

Energy conservation in buildings the achievement of 50% energy saving: an environmental challenge?

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Beyond the glass case the past, the heritage, and the public in Britain por Merriman, Nick

Present situation, problem, prospect and practical implementation program of education and research for efficient utilization and conservation of cultivated lands and appropriate a...