Assertion: forest's number | /r/HasProperty | developed
Facets:
value: since
type: TEMPORAL
Source sentences:
text: A number of sets of criteria and indicators have since been developed to evaluate the achievement of SFM at the global, regional, country and management unit level.
text: Since planned management of tropical forests was first introduced in the nineteenth century a number of silvicultural systems have been developed, each comprising a basis for tropical forest management for wood production.