Shaw, Rod Mixing concrete - 5: Aggregates and cement ready for mixing Mixing concrete - 5: Aggregates and cement ready for mixing WEDC;Contextual;Concrete;Mixing concrete;Cement;Cement mortar;Aggregate;Cement bags;Shuttering;Tamping;Wheelbarrow;Line drawings;International and Development Communication 2019-02-20
    https://repository.lboro.ac.uk/articles/figure/Mixing_concrete_-_5_Aggregates_and_cement_ready_for_mixing/7314479
10.17028/rd.lboro.7314479.v1