Natural vs. Precise Concise Languages for Human Operation of Computers: Research Issues and Experimental Approaches Ben Shneiderman author 1980-06 text 18th Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Philadelphia, Pennsylvania, USA conference publication shneiderman-1980-natural 10.3115/981436.981478 https://aclanthology.org/P80-1036/ 1980-06 139 141