prepared under the direction of the ASM Handbook Committee. prepared under the direction of the ASM International Handbook Committee. prepared under the direction of the chief of engineers. prepared under the direction of the American Geological Institute. Taylor Lyman, editor ; prepared under the direction of the ASM Handbook Committee. prepared under the auspices of the SAE Spring Committee. prepared under the direction of the ASM Handbook Committee ; edited by Taylor Lyman. Howard E. Boyer, editor ; prepared under the direction of the ASM Handbook Committee. prepared under the direction of W. R. Thompson. prepared under the direction of an Editorial Board.