tree(graph)
preferred label: درخت @fa
type: Concept
narrower: graceful tree

graceful labeling
preferred label: برچسب‌زنی دلپذیر @fa
type: Concept
related: graceful tree

graceful tree
related: graceful labeling
broader: tree(graph)
preferred label: درخت دلپذیر @fa
type: Concept