TY - RPRT TI - Mechanical and physical properties of coquina stone from the Castillo de San Marcos National Monument AU - Knab, L I AU - Clifton, J R PY - 1988 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 88-3714 DO - 10.6028/NBS.IR.88-3714 ER -