The essentials of mental measurement / by William Brown.
- Brown, William, 1881-1952.
- Date:
- 1911
Licence: Public Domain Mark
Credit: The essentials of mental measurement / by William Brown. Source: Wellcome Collection.
32/172 (page 20)
Licence: Public Domain Mark
Credit: The essentials of mental measurement / by William Brown. Source: Wellcome Collection.