TY  - GEN
AU  - Pfeiffer,Ehrenfried
TI  - Soil fertility, renewal and preservation bio-dynamic farming and gardening
PY  - 1947///
CY  - London
KW  - Soil Fertility
KW  - Gardening
KW  - Bio-Dynamic
N1  - With an introduction by E.B. Balfour
ER  -