4
Steele, Ross.
| D.C. Heath |
1985
5
Edwards, Richard,
| D.C. Heath |
1975
6
Dale, Nell B.
| D.C. Heath |
1985
7
Henderson, J. Vernon.
| D.C. Heath |
1991
8
Orlich, Donald C.
| D.C. Heath |
1994
9
Boyer, Paul S.
| D.C. Heath and Co. |
1996
10
Boyer, Paul S0
| D.C. Heath and Co. |
1996