3DF.ZIP       B   26096  910810  3D func. plot displays F(x,y) ortho proj,w/src 
GPT34SRC.ZIP  B  713497  930610  GNUPLOT version 3.4 source 
PLOT3D_A.ZIP  B   71272  910621  3D surfaces in any coord system, with TC src 
SFPLOT1B.ZIP  B    3783  910523  BASICA pgm plots f(latitude,longitude) in 3D