Title: Essays in war-time
Subtitle: further studies in the task of social hygiene.
Subjects: Sex, War, Eugenics, Gender identity, Marriage, Evolution (Biology), Sexually Transmitted Diseases, Prevention & control, National Health Programs, Biological Evolution, Armed Conflicts, Guerre, Eugénisme, Identité sexuelle, Mariage, Assurance-maladie, Évolution (Biologie), Sex role, Evolution