Anderton Pamela Changing to the metric system Conversion factors,symbols and definition Anderton Pamela; Bigg P H - 4 - London National Physiacl Laboratory 1972 - v,58p cm. Appendix: P 33-50 ISBN: 11 480029 4 Source: General Book Subjects--Topical Terms: Trade Dewey Class. No.: X:5e.3.N7, L2