Proctor needle

Fig. 7.13 Proctor needle penetration resistance for mortar sieved from concretes containing varying retarder levels.

Proctor, C. S. (1992) Characterisation of a needl morphology phase observed in CMSX-4 , Report to Rolls-Royce, University of Cambridge, May 1992. 

Anwer, K., Earle, K.A., Shi, M., Wang, J., Mumper, R.J., Proctor, B. et al. (1999) Synergistic effect of formulated plasmid and needle-free injection for genetic vaccines. Pharm. Res., 16, 889-895. 

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