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image no.:
62360
contact sheet:
A1994
collection:
Agriculture Canada Research Station, Brandon
description:
Potted test plants showing amount of ammonium phosphate on infertile drifted subsoil. Photo from a glass lantern slide.
subject(s):
Agriculture
▪
Crops
▪
Drought
▪
Environment
▪
Research
date:
c. 1936