DR PHIL CALLAHAN ON PARAMAGNETISM
$1.65
Interview by Graeme Sait. Dr Phil Callahan’s landmark studies of paramagnetic rock, soil fertility, plant nutrition and insect infrared communication have huge implications for sustainable agriculture.
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DR PHIL CALLAHAN ON PARAMAGNETISM
Interview by Graeme Sait.
Dr Phil Callahan’s landmark studies of paramagnetic rock, soil fertility, plant nutrition and insect infrared communication have huge implications for sustainable agriculture.
