1. L. Barker, and N. W. Hollingworth(1958 ). An investigation into the composition of ammoniacal liquor. II. A survey of effluents produced in the gas and coking industries .Gas Council Research Communications, G.C. 52.
2. W. H. Blackburn, L. Barker, and J. R. Catchpole(1954 ). An investigation into the composition of ammoniacal liquor. 1. Continuous vertical retort liquor .Gas Council Research Communications, G.C. 17.
3. THE CALCULATION OF THE TIME-MORTALITY CURVE
4. THE TOXICITY OF POISONS APPLIED JOINTLY1