1. Effect of duration of storage on the potency of dilutions of PPD antigens;Edwards;Tubercle, Lond.,1963
2. The tuberculin test and the laboratory diagnosis of tuberculosis;Lesslie,1961
3. The standardization of tuberculins by biological assay;Lesslie,1962
4. The use of dilute tuberculins for testing cattle;Lesslie;Br. vet. J.,1965
5. Renset tuberkulin, dets fremstilling og egenskaber;Lind,1945