DBD::mysql (or whatever database system you use)
AuthenDBI (if you want to use Database based authentication)
CDK (for the telnet interface not nessecary if you plan to use the web based circulation module) also requires installation of the C CDK libraries http://www.vexus.ca/CDK.html ( CDKModuleHasProblems )
+File::Spec
+HTML::Template
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