edited by Howard S. Rowland & Beatrice L. Rowland

Aspen 1997 4th ed

Available at 17 libraries

edited by Howard S. Rowland and Beatrice L. Rowland

Aspen Publishers 1992 3rd ed

Available at 7 libraries

Kenneth E. Lawrence, Howard S. Rowland, editors

Aspen Systems Corp. 1982

Available at 2 libraries

[compiled by] the Center for Compliance Information ; editors, Alexander McRae, Leslie Whelchel, consulting editor, Howard Rowland

Aspen Systems Corp. 1978

Available at 1 libraries

Howard S. Rowland, Richard L. Wing

Macmillan c1967

Available at 4 libraries