החיפוש שביצעת - information propagation basic extensions method lisa - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
information propagation » information presentation, information organization
propagation basic » propagation based, propagation asia, propagation case
extensions method » extensions methods, extension method, extension methods
basic extensions » basics extensions, basic extension, based extensions
method lisa » method linear, method laser

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