Osborne, R. V. Performance of an Automatic Analyser for Tritium in Urine Health Physics, 18, No. 1, January 1970 Page, A. L., and Ganje, T. J. Accumulations of Lead in Soils for Regions of High and Low Motor Vehicle Traffic Density Environmental Science & Technology, 4, No. 2, February 1970 Palma, R.J., Reinbold, P.E. and Pearson, K.H. Determination of Calcium, Strontium, Barium, and Yttrium by Spectropolarimetric Analysis Analytical Letters 2(10), 553-564 (1969) Peakall, D. B. Effect of DDT on Calcium Uptake and Vitamin D Metabclism in Birds Nature, 224, No. 5225, December 20, 1969 Prigent, Y. and Van Kote, F. Radiochemical Determination of Beryllium-7 in a Fission Product Mixture Containing many Inorganic Salts Rapport CEA-R-3877 Prospero, J. M. and Carlson, T. N. Radon-222 in the North Atlantic Trade Winds: to Dust Transport from Africa Its Relationship Science, 167, No. 3920, February 13, 1970 Radicactivite Ambiante Dans Les Pays De La Communaute Bulletin Trimestriel, N°? 2/69 October 1969 Radioactive Contamination of Foodstuffs in the Countries of the Community in 1967 EUR 4383 da/f/i/n, December 1969 Radioactivity Survey Data in Japan NIRS RSD-22, February 1969 National Institute of Radiological Sciences, IV - 8 Chiba, Japan