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VDI 4510 Engineering services and requirements to engineering service providers Verband Deutscher Ingenieure / Association of German Engineers / 01-May-2006 / 75 pages
VDI 4600 Cumulative energy demand - Terms, definitions, methods of calculation Verband Deutscher Ingenieure / Association of German Engineers / 01-Jun-1997 / 19 pages
VDI 4600 Sheet 1 - DRAFT Draft Document - Cumulative energy demand - Examples Verband Deutscher Ingenieure / Association of German Engineers / 01-Jun-1998 / 39 pages
VDI 4602 Sheet 1 Energy management - Terms and definitions Verband Deutscher Ingenieure / Association of German Engineers / 01-Oct-2007 / 66 pages
VDI 4608 Sheet 1 Energy systems - Combined heat and power - Terms, definitions, examples Verband Deutscher Ingenieure / Association of German Engineers / 01-Mar-2005 / 47 pages
VDI 4608 Sheet 2 Energy systems - Combined heat and power - Allocation and evaluation Verband Deutscher Ingenieure / Association of German Engineers / 01-Jul-2008 / 71 pages
VDI 4608 Sheet 2 - DRAFT Draft Document - Energy systems - Combined heat and power - Allocation and evaluation Verband Deutscher Ingenieure / Association of German Engineers / 01-Dec-2006 / 40 pages
VDI 4630 Fermentation of organic materials - Characterisation of the substrate, sampling, collection of material data, fermentation tests Verband Deutscher Ingenieure / Association of German Engineers / 01-Apr-2006 / 92 pages
VDI 4631 - DRAFT Draft Document - Quality criteria for biogas plants Verband Deutscher Ingenieure / Association of German Engineers / 01-Dec-2008 / 70 pages
VDI 4640 Sheet 1 Thermal use of the underground - Fundamentals, approvals, environmental aspects Verband Deutscher Ingenieure / Association of German Engineers / 01-Jun-2010 / 33 pages
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