החיפוש שביצעת - ((international convention) or (interpersonal communication)) forest extension methods links - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
international convention » international cooperation, international context, international communication
extension methods » extraction methods, regression methods
forest extension » forestry extension, forestry expansion, set extension
methods links » methods linda, methods line, methods linear

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