Heather, J. F. (1888). Drawing and measuring instruments. Crosby Lockwood and son.
Chicago-viite (17. p.)Heather, J. F. Drawing and Measuring Instruments. London: Crosby Lockwood and son, 1888.
MLA-viite (9. p.)Heather, J. F. Drawing and Measuring Instruments. Crosby Lockwood and son, 1888.
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