Lange golven (economie)
type: Concept
editorial note: -PV
main entity of page: https://koninklijkebibliotheek.triply.cc/.well-known/genid/6e6c3ebb7ff38c542ae80eafb826b206
main entity of page: http://data.bibliotheken.nl/doc/thes/p078570352
broader: p078474671
in scheme: gtt
preferred label: Long waves @en