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birdy1976: @Mentimeter: interact with your #audience, free of charge & without registration (via @MatthiasHeil cc #hwz #ict) #poll http://t.co/e4pjmxIt
birdy1976: @Mentimeter: interact with your #audience, free of charge & without registration (via @MatthiasHeil cc #hwz #ict) #poll http://t.co/e4pjmxIt
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birdy1976: Free for all: @NASciences puts 4’000 #books online at no charge (via @k_reichelt via @mkerres) #ebooks #NAP http://icio.us/x2ksmq
birdy1976: Free for all: @NASciences puts 4’000 #books online at no charge (via @k_reichelt via @mkerres) #ebooks #NAP http://icio.us/x2ksmq