TY - RPRT TI - Human bone microstructure studied by collagenase etching. AU - I G Mackie AU - M Green AU - H Clarke AU - D H Isaac PY - 1989 DO - 10.1302/0301-620x.71b3.2542341 UR - https://pubmed.ncbi.nlm.nih.gov/2542341/ ID - 2542341 ER -