Principles of biological assay.
With a forward by Percival Hartley.

APA Citation

Emmens, C. W. (Clifford Walter). (1948). Principles of biological assay. London: Chapman & Hall.

MLA Citation

Emmens, C. W. (Clifford Walter). Principles of Biological Assay. London: Chapman & Hall, 1948.

Warning: These citations may not always be complete (especially for serials).