TY - RPRT TI - Osteoporotic bone microstructure by collagenase etching. AU - I G Mackie AU - M Green AU - H Clarke AU - D H Isaac PY - 1989 DO - 10.1136/ard.48.6.464 UR - https://pubmed.ncbi.nlm.nih.gov/2545170/ ID - 2545170 ER -