The Role of language in problem solving 2 : edited proceedings of the Johns Hopkins University Applied Physics Laboratory Second Symposium on the Role of Language in Problem Solving held in Laurel, Maryland, 2-4 April, 1986 - Johns Hopkins University Applied Physics Laboratory Symposium on the Role of Language in Problem Solving; Boudreaux, J. C.; Hamill, Bruce W.; Jernigan, Robert (North-Holland, 1987)