na INLIS000000000033228 Ind 0010-1218015066 Bone metabolism and the action of prathyroid ectract: an enzymalogical approack HEKKELMAN, Jan Willem J. W. Hekkelman Leiden Luctar et Emergo 1932 131 p.: ill.; 25 cm 131 p.: ill.; 25 cm 611.71 HEKb Thesis (DR) Univ te Leiden 611.71 BONES 102/64