Assertion: biological warfare | /r/CapableOf | take three main forms
Facets:
value: before the 20th century
type: TEMPORAL
Source sentences:
text: The use of biological agents is not new, but before the 20th century, biological warfare took three main forms:
text: The use of biological agents is not new, but before the 20th century, biological warfare took three main forms:
text: The use of biological agents is not new, but before the 20th century, biological warfare took three main forms: