J89-4002 model , in that it is basically a direct production system that utilizes an intermediate
P85-1012 specification as though one were doing direct production . Structural rearrangements are
H86-1015 specification as though one were doing direct production . Structural rearrangements are
W09-3104 where the first one is probably a direct production in English , whereras the latter
J93-1009 a perennial problem with the ` direct production ' generators used with expert
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