Summary of the 7 year research at Dottenfelderhof in Germany by Hartmut Spiess
Summary of Researches in Table Form by Brian Keats
Summary of Maria Thun's work and Planting Calendar Research by Malcolm Gardner
Report on Lawrence Edwards' work with Plant Buds by Brian Keats
Chronobiology of Trees : Synthesis of traditional Phytopractices and Scientific Research, as a Tool of Future Forestry by Ernst Zurcher
Evidence for Lunar-Sidereal Rhythms in Crop Yield by Nicholas Kollerstrom & Gerhard Staudenmaier
Report and Analysis of the Spiess Experiments by Nicholas Kollerstrom
Lunar Influence on Plants by Wolfgang Schad