H ?

1970s languages ↑
High Cold War ↑
Fourth generation ↑

Explore languages for and for year 1973

DETOL    ⊕ 1973   ⊕ External systems testing     Test control language 
DSDML    ⊕ 1973        
File Composition    ⊕ 1973        
GSL    ⊕ 1973   ⊕ Event scheduling     Generalized Simulation Language 
SDL    ⊕ 1973       Burroughs Software Development Language 
SETS    ⊕ 1973        
WFL    ⊕ 1973