. Effectiveness of orchard heaters . Fig. 8. Photo of the network of wires for thermocouples and other instruments in the one-acre plot at Riverside. Photo was taken during first year of tests; the trees were much larger by the end of the five-year period during which the tests were conducted. [15]
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookcentury1900, bookcollecti, bookleafnumber15, booksubjectfruit