201.
An Ethical Problem, Or, Sidelights Upon Scientific Experimentation on Man and Animals
by Albert Leffingwell
ISBN: 9781357271749
List Price: $28.95
206.
American Meat and Its Influence upon the Public Health
by Leffingwell, Albert
ISBN: 9781010221111
List Price: $14.95
212.
An Ethical Problem; Or, Sidelights upon Scientific Experimentation On Man and Animals
by Leffingwell, Albert
ISBN: 9789355113269
213.
The Rise of the Vivisection Controversy: a Chapter of History
by Leffingwell, Albert 1845-1916
ISBN: 9781014271129