Soil fetility and sertilizers 1956. Ed2. 1970 /

Eitemau Tebyg

• Soil fetility Renewal and preservation: Biodynamic farming and gardening.1 /
  gan: Pfeiffer, Ehrenfried
• Soil fetility in India 1967 /
  gan: Agarwal, Rr
• Soils land soil fetility. Ed. 3. 1973 /
  gan: Thompson, Louis M.
  Cyhoeddwyd: (1973)
• Commercial fetilizers their sources and use /
  gan: Collings, Gilbert H.
  Cyhoeddwyd: (1955)
• Manures and fetilizers and their horticultural application /
  gan: Faulkner, Rp
  Cyhoeddwyd: (1940)