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1. Soil as world heritage

پدیدآورنده : edited by David Dent

کتابخانه: Library and Documentation Center of Kurdistan University (Kurdistan)

موضوع : ، Soil biology,، Soil ecology,، Soil management,، Soils

2. Sugar beet: nitrogen supply from fertilizers and manures

پدیدآورنده : Burg, P.F.J. van

کتابخانه: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)

موضوع : Fertilizers ، Sugar beet,، Nitrogen fertilizers,Nitrogen content ، Soils

پدیدآورنده : edited by David Dent