biplane design
type: Concept
broader: 2-design
preferred label: طرح دوصفحه‌ای @fa
related: strongly regular graph

2-design
type: Concept
narrower: biplane design
preferred label: 2-طرح @fa

strongly regular graph
type: Concept
preferred label: گراف قوی‌منتظم @fa
related: biplane design