Palmer, P. E. S. Manual of Darkroom Technique/ World Health Organization Basic Radiological System P. E. S. Palmer - New Millennium Edition - Geneva World Health Organization 1978 Krishan Nagar, New Delhi A.I.T.B.S. Publishers & Distributors - 25p. ill. 29cm ISBN: 9789241541787 LC Class. No.: RA975.5 / .R3