Original publication date: SUMMER 1968
Original publisher:
Publication status: Out of print
Original publisher:
Publication status: Out of print
The Productivity of the Earth
Conclusion) ……………………..H.H. Koepf …………………………1
Digging and Delving VIII & IX……..Helen Philbrick………………….10
Tea Garden Talk………………….Heinz Grotzke…………………………16
An Unpopular Group of Creatures……Dr. H. Gehlker……………….20
Parallels …………………………………………………………………………..25
Organic Fertilizing Improves Soil Hygiene……………………………….26
Book Reviews ………………………………………………………………….31