SPENCER, HENRY CECIL.
Technical drawing problems, by Henry Cecil Spencer & Hiram E. Grant. (Series 2) NM: new cover & 12 additional problem sheets.
SPENCER, HENRY CECIL. Technical drawing problems, by Henry Cecil Spencer & Hiram E. Grant. (Series 2) NM: new cover & 12 additional problem sheets. © 1Nov44; AA468469. H. C. Spencer & H. E. Grant (A); 10Dec71; R518173.
H. C. Spencer & H. E. Grant|A