G. F. Longman

The analysis of detergents and detergent products

G. F. Longman, 1975 .

The analysis of detergents.

G. F. Longman, 1975, Talanta.

A photoelectric photometer for the estimation of vitamin A in margarine.

N. T. Gridgeman, G. F. Longman, J. L. Bowen, 1946, The Analyst.

Determination of Anionic-Active Detergents by Two-phase Titration

G. F. Longman, V. Reid, E. Heinerth, 1967 .

The determination of nitrilotriacetic acid (NTA) in sewage and sewage effluent

M. Stiff, G. F. Longman, D. K. Gardiner, 1971 .