Written by John W. Bartok, Jr., an authority on greenhouses for over 30 years, this highly practical book reviews the merits and limitations of current energy-conservation strategies for commercial greenhouses. Topics covered include principles of heat loss, site selection and modification, construction materials, insulation, fuels and heating, ventilation and cooling, space utilization, utilities, strategies for reducing trucking costs, and managing for efficiency. Supplementing the text are 53 illustrations, 26 tables, equations and calculation examples and four appendixes -- an energy conservation checklist, heat loss calculations, selected product manufacturers and distributors, and useful conversions. The book, a revision of the 1989 version of the same name, will be of interest to anyone who is constructing a new greenhouse, considering renovating a greenhouse, or simply looking to increase energy conservation and efficiency in daily greenhouse operation. A Japanese language version (NRAES-003ja.pdf) is also available here.