TY - RPRT TI - Optimization of polymer concrete composites: final report AU - Czarnecki, Lech AU - Garbacz, Andrzej AU - Lukowski, Pawel AU - Clifton, James R PY - 1999 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 6361 DO - 10.6028/NIST.IR.6361 ER -