%0 Conference Paper %B Proceedings of the fifth SIGCSE technical symposium on Computer science education - SIGCSE '75 %D 1975 %T Two systems which produce animated representations of the execution of computer programs %A Baecker, Ronald M. %I ACM Press %P 158 - 167 %R http://doi.acm.org/10.1145/800284.811152 %X
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%8 1975