1. Ministry of Agriculture 1944 The swab method for examination of milk plant (provisional technique). Form no. C. 195/ TPY
2. A comparison of the recovery rate of organisms from cotton wool and alginate wool swabs;Higgins;Mon. Bull. Minist. Hlth Lab. Serv,1950
3. The use of calcium alginate wool for swabbing dairy equipment;Tredinnick;Proc. Soc. appl. Bact,1951