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Grand River Conservation Authority fonds.
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Mrs. Florence Snyder : history.
Mrs. Florence Snyder : history.
Water Management : Series #3 "Geography" : slide-tape presentation.
Water Management : Series #3 "Geography" : slide-tape presentation.
A question of alternatives.
A question of alternatives.
Cutting our flood losses : slide-tape presentation with script.
Cutting our flood losses : slide-tape presentation with script.
Annual report 1993, synced.
Annual report 1993, synced.
Annual report 1993.
Annual report 1993.
Annual report 1992 : slide show, single projector version.
Annual report 1992 : slide show, single projector version.
App's Mill fund raising.
App's Mill fund raising.
Doon : parable of the coffin maker, Brad Stevenson, Director.
Doon : parable of the coffin maker, Brad Stevenson, Director.
Annual report 1989 : slide show, single projector version.
Annual report 1989 : slide show, single projector version.
GRCA slide show #2 audio.
GRCA slide show #2 audio.
Shand Dam small hydro system, Oct. 29, 1987.
Shand Dam small hydro system, Oct. 29, 1987.
Water Management : Series #2 "History" : slide-tape presentation.
Water Management : Series #2 "History" : slide-tape presentation.
Annual report 1985, Feb. 17, 1986.
Annual report 1985, Feb. 17, 1986.
Apps' Mill-Fundraising, August 1986, [Chargeur No. 1].
Apps' Mill-Fundraising, August 1986, [Chargeur No. 1].
Nature Centers and Flood Warning System : slide-tape presentation.
Nature Centers and Flood Warning System : slide-tape presentation.
Annual report 1984.
Annual report 1984.
Guelph Dam Micro Hydro Demonstration Project, May 3, 1982 and April 1983, [Chargeur No. 2], even numbers.
Guelph Dam Micro Hydro Demonstration Project, May 3, 1982 and April 1983, [Chargeur No. 2], even numbers.
Nature Centres and Flood Warning System : slide-tape presentation.
Nature Centres and Flood Warning System : slide-tape presentation.
Grand River Conservation Authority Interim Resource Management Plan, [Changeur No. A], June 1983.
Grand River Conservation Authority Interim Resource Management Plan, [Changeur No. A], June 1983.
Reforestation : Why Dams : Channel Improve, February 9, 1983, [Chargeur No. 1], Tray Bank 2 even.
Reforestation : Why Dams : Channel Improve, February 9, 1983, [Chargeur No. 1], Tray Bank 2 even.
Grand River Conservation Authority Interim Resource Management Plan, August 1983 (Tray Bank, single tray version).
Grand River Conservation Authority Interim Resource Management Plan, August 1983 (Tray Bank, single tray version).
Water Management : Series #2 "Low Flow", September 1982 : slide-tape presentation.
Water Management : Series #2 "Low Flow", September 1982 : slide-tape presentation.
Water Management : Series #5, Water Quality Monitoring, April, 1981 : slide-tape presentations.
Water Management : Series #5, Water Quality Monitoring, April, 1981 : slide-tape presentations.
How To Series : master copy, six sections, How to Take Water Samples (slides 1-14) Water Chemistry Tests Safety and Procedures (slides 16-30), How to do Carbon Dioxide Tests (slides 32-48), How to do Dissolved Oxygen Water Tests (slides 50-78), How to do pH Tests (slides 80-97) and How to do Water Hardness Tests (slides 99-118).
How To Series : master copy, six sections, How to Take Water Samples (slides 1-14) Water Chemistry Tests Safety and Procedures (slides 16-30), How to do Carbon Dioxide Tests (slides 32-48), How to do Dissolved Oxygen Water Tests (slides 50-78), How to do pH Tests (slides 80-97) and How to do Water Hardness Tests (slides 99-118).
Cutting Our Flood Losses : Canada/Ontario Flood Damage Reduction Program.
Cutting Our Flood Losses : Canada/Ontario Flood Damage Reduction Program.
Wildlife conservation : slide-tape presentation with script, Oct. 31, 1980.
Wildlife conservation : slide-tape presentation with script, Oct. 31, 1980.
Water Management : Series #8 "Personal Conservation Techniques", October 1980 : slide-tape presentation.
Water Management : Series #8 "Personal Conservation Techniques", October 1980 : slide-tape presentation.
Kitchener 125th : year of the child, May 1979.
Kitchener 125th : year of the child, May 1979.
Land : The Threatened Resource; Careers in Agrology : Land Use.
Land : The Threatened Resource; Careers in Agrology : Land Use.
Grand River Conservation Authority : music-sfx-voice mix, April 1978.
Grand River Conservation Authority : music-sfx-voice mix, April 1978.
GRCA audio #3 : geography of basin, Nov. 1978.
GRCA audio #3 : geography of basin, Nov. 1978.
GRCA audio #4 : low flow, Nov. 1978.
GRCA audio #4 : low flow, Nov. 1978.
App's Mill show, Aug. 12, 1976.
App's Mill show, Aug. 12, 1976.