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\bibitem{Doerrlamm+Heemann1998} D{\"o}rrlamm, M., \& Heemann, P. (1998). A Youth help meets drug help -- the {\textquotedblleft}Frankfurt Crack-Street-Project{\textquotedblright}. \textit{European Cities on Drug Policy Newsletter}, (16; 09/1998), 3.

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