TY - GEN A1 - Schmidt, Wolfram T1 - Challenges of the African Environmental Conditions for Concrete Mixture Compostion T2 - Workshop "Cement and Concrete for Africa", BAM T2 - Workshop "Cement and Concrete for Africa", BAM CY - Berlin, Germany DA - 2011-08-17 PY - 2011 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/24726 AN - OPUS4-24726 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany