Bligh,N.M Tje Evolution And Devlopment Of The Quantum Theory N.M Bligh - London Edward Arnold and Co. 1926 - 112pages Pr means Physics Relativity Page No. 471-472 in A-Z Accession Register (Accession No.Pr1-Pr36) Subjects--Topical Terms: Physics Relativity Dewey Class. No.: PR21