Hawcroft D., Hector T. H., . (1987). Quantitative Bioassay : Analytical Chemistry By Open Learning. Weinheim: John Wiley.
Hawcroft D, Hector T H, . 1987. Quantitative Bioassay : Analytical Chemistry By Open Learning. Weinheim: John Wiley.
Hawcroft D, Hector T H, . Quantitative Bioassay : Analytical Chemistry By Open Learning. Weinheim: John Wiley. 1987.