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Explore languages for United States
$    1983   United States   Theoretical simple functional programming language 
(S)PAR    1962 Macroassemblers   United States   Bendix macro assembler 
*l    1967 List   United States   L6 for the 360 
*LISP    1985 Lazy Evaluation LISPs   United States   Data parallel TM LISP 
*MOD    1980 Pascals   United States   Concurrent MOdula 
*n    1973   United States    
*Prolog    1989 Horn clause  

Internal error

CMPVARLIT: Subscript out of range 9 ProtiumLPNDB at CountryLabel creating comparison structure