TY - RPRT TI - Shrinkage stresses in masonry walls : progress report no. 2 AU - Svendsen, Sven D AU - Watstein, D AU - Levy, S PY - 1955 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 4037 DO - 10.6028/NBS.RPT.4037 ER -