Reference
- Williams , M. K. , Walford , Joan and King , E. 1968 . A Trial of Terylene Overalls for Lead-Acid Electric Accumulator Pasters. . Brit. J. Ind. Med. , 25 April : 144
- Williams , M. K. , King , E. and Walford , Joan . 1968 . Method for Estimating Objectively the Comparative Merits of Biological Tests of Lead Exposure. . Brit. Med. J. , 1 March : 618
- Personal Samplers of Airborne Contaminants , London : C. F. Casella & Co. Ltd., Regent House, Britannia Walk . Leaflet 930/5/A1, N. 1
- Roach , S. A. 1966 . The Null-Point Method for Measuring the Flow Rate in a Sampling Train. . Amer. Ind. Hyg. Assoc. J. , 27 March-April : 135
- Roach , S. A. , Baler , E. J. , Ayer , H. E. and Harris , R. L. 1967 . Testing Compliance with Threshold Limit Values for Respirable Dusts. . Amer. Ind. Hyg. Assoc. J. , 28 November-December : 543
- Higgins , R. I. and Dewell , P. 1967 . “ A Gravimetric Size-Selecting Personal Dust Sampler. ” . In Inhaled Particles and Vapours , Edited by: Davies , C. N. Vol. 2 , 575 Oxford : Pergamon Press .
- Bloor , W. A. , Eardley , R. E. and Dinsdale , A. 1968 . A Gravimetric Personal Dust Sampler. . Ann. Occup. Hyg. , 11 April : 81