Books by D. R. Hoagland:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Hoagland, D. R. (Dennis Robert), 1884-1949: The effect of several types of irrigation water on the pH value and freezing point depression of various types of soils (University of California Press, 1919), also by A. W. Christie (page images at HathiTrust)- Hoagland, D. R. (Dennis Robert), 1884-1949: Fertilizer problems and analysis of soils in California (University of California, College of Agriculture, Agricultural Experiment Station, 1930) (page images at HathiTrust)
- Hoagland, D. R. (Dennis Robert), 1884-1949: Fertilizer problems and analysis of soils in California (University of California, College of Agriculture, Agricultural Experiment Station, 1939) (page images at HathiTrust)
- Hoagland, D. R. (Dennis Robert), 1884-1949: Fertilizers, soil analysis and plant nutrition (College of Agriculture, University of California, 1949), also by California Agricultural Experiment Station (page images at HathiTrust)
- Hoagland, D. R. (Dennis Robert), 1884-1949: Fertilizers, soil analysis and plant nutrition (University of California, College of Agriculture, Agricultural Experiment Station, 1947) (page images at HathiTrust)
- Hoagland, D. R. (Dennis Robert), 1884-1949: Soil analysis and soil and plant interrelations (University of California, College of Agriculture, Agricultural Experiment Station, 1922) (page images at HathiTrust)
- Hoagland, D. R. (Dennis Robert), 1884-1949: Table of PH, H⁺ and OH⁻ values corresponding to electromotive forces determined in hydrogen electrode measurements, with a bibliography. (University of California Press, 1919), also by Carl Louis August Schmidt (page images at HathiTrust)
- Hoagland, D. R. (Dennis Robert), 1884-1949: The water-culture method for growing plants without soil (College of Agriculture, University of California, 1950), also by D. I. Arnon (page images at HathiTrust)
- Hoagland, D. R. (Dennis Robert), 1884-1949: Water culture method for growing plants without soil (University of California, College of Agriculture, Agricultural Experiment Station, 1938), also by D. I. Arnon (page images at HathiTrust)
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