1. Tkachuck, RD. 1983. The Problem of MoralsOrigins-GRI 10(1):4. CELD ID 2017. Full text link available.
The Problem of Morals
2. Tkachuck, RD. 1983. The El Nino EventOrigins-GRI 10(1):41-43. CELD ID 2022. Full text link available.
The El Nino Event
3. Tkachuck, RD. 1983. The Little Ice AgeOrigins-GRI 10(2):51-65. CELD ID 2025. Full text link available.
The Little Ice Age
4. Tkachuck, RD. 1983. Life from SpaceOrigins-GRI 10(2):90-92. CELD ID 2027. Full text link available.
Life from Space
5. Tkachuck, RD. 1982. AxiomsOrigins-GRI 9(1):5-6. CELD ID 2002. Full text link available.
Axioms
6. Tkachuck, RD. 1982. Climatic Changes and Changes in PopulationsOrigins-GRI 9(1):54-55. CELD ID 2007. Full text link available.
Climatic Changes and Changes in Populations
7. Tkachuck, RD. 1982. PuzzlesOrigins-GRI 9(2):61-62. CELD ID 2008. Full text link available.
Puzzles
8. Tkachuck, RD. 1981. But Is It As Much Fun?Origins-GRI 8(1):5-6. CELD ID 1991. Full text link available.
But Is It As Much Fun?
9. Tkachuck, RD. 1981. The Age Dating of Biological Materials - Some Interesting ProblemsOrigins-GRI 8(1):51-52. CELD ID 1997. Full text link available.
The Age Dating of Biological Materials - Some Interesting Problems
10. Tkachuck, RD. 1981. The "Australian Problem"Origins-GRI 8(2):93-95. CELD ID 2001. Full text link available.
The "Australian Problem"
11. Tkachuck, RD. 1980. Beyond DesignOrigins-GRI 7(1):4-5. CELD ID 1974. Full text link available.
Beyond Design
12. Tkachuck, RD. 1980. A Methodological ManualOrigins-GRI 7(1):40-41. CELD ID 1980. Full text link available.
A Methodological Manual
13. Tkachuck, RD. 1980. Supernatural ProblemsOrigins-GRI 7(2):48-49. CELD ID 1982. Full text link available.
Supernatural Problems
14. Tkachuck, RD. 1980. Wood from the Ark A Knotty ProblemOrigins-GRI 7(2):89-91. CELD ID 1989. Full text link available.
Wood from the Ark A Knotty Problem
