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Filters: Author is Werner, U.  [Clear All Filters]
Sasse, L., Eggeling, G., Guldager, R., Guldager, H., Hilliges, G., Tietjen, C., y Werner, U., «Biogas : manual for the realisation of biogas programmes». Bremen Overseas Research and Development Association, Bremen, Germany, p. iii, 116 p.: fig., tab., 1979.
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