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The amplifier, which can be made for les than <less than>pounds<more than>20, is described and illustrated. It has proved particularly use...
Read moreA miniature version (suitable for measuring radiation in herbage and short grass) of an instrument described previously [see H.A., 35: 223]....
Read moreThe construction, installation and performance of the instrument described.
Read moreSoyabeans cv. Davis were grown in the field in open-top chambers ventilated with charcoal-filtered air, non-filtered air or non-filtered air to which ...
Read moreA new instrument, which is portable, easy to use and gives an immediate digital display of percentage transmission, for measuring the percentage trans...
Read moreTotal solar, near infra-red, and photosynthetically active radiation were measured by tube solarimeters at Rothamsted in barley, sugar beet, field bea...
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