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Browsing by Authors Simpson, D.
Showing results 7 to 9 of 9
| Issue Date | Title | Author(s) | | 1979 | Increasing food production | Ontario Institute for Studies in Education; Hulse, J.H.; Simpson, D. |
| 1979 | Post-harvest technology | Ontario Institute for Studies in Education; Forrest, B.; Padua, D. de; Yaciuk, G.; Simpson, D. |
| 1979 | Water problems in the Third World | Ontario Institute for Studies in Education; McGarry, M.; McBeth, D.; Gill, J.; Simpson, D. |
Showing results 7 to 9 of 9
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