Three decades of soil research 1972-2006: department of soil science and agricultural chemistry

Eitemau Tebyg

• Three Decades of Soil Research
  gan: Marykutty, K C
  Cyhoeddwyd: (2006)
• Three decades of soil research (1972-2006)
  gan: Marykutty, K C
  Cyhoeddwyd: (2006)
• Chemistry of the soil
  gan: Bear, Firman E
  Cyhoeddwyd: (1964)
• Soils and agriculture
  gan: Tinker, P.B
  Cyhoeddwyd: (1980)
• SOIL SURVEY MANUAL
  gan: US DEPARTMENT, OF AGRICULTURE
  Cyhoeddwyd: (1966)