What has the author Walter George Heid written?

Answer 1

Walter George Heid has written:

'Solar-assisted combination grain drying' -- subject(s): Drying, Grain, Solar energy

'Factors determining the price of white wheat in the Pacific Northwest'

'Photovoltaics, technological progress and its future in agriculture' -- subject(s): Agricultural innovations, Photovoltaic power generation

'The performance and economic feasibility of solar grain drying systems' -- subject(s): Drying, Grain

'Progress of solar technology and potential farm uses' -- subject(s): Solar energy in agriculture