Laboratory physics / by J.H. Avery and A.W.K. Ingram. With a foreword by Alexander Wood. Avery, J. H. (John Henry) Ingram, A. W. K. (Albert William Kemp), joint author. Physics Laboratory manuals. QC35 .A8 530.7 AVL Includes Index. London : Heinemann, c1950. c1950. 1950 Text 439 p. : eng