TY - RPRT TI - Flexural tests of prestressed cellular slabs (Slabs F-3 and F-4) AU - Kirstein, Arthur F AU - Skoda, Leopold F PY - 1959 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 6529 DO - 10.6028/NBS.RPT.6529 ER -