1. Controlling nitrogen flows and losses /
Author: edited by D.J. Hatch ... [et al.]
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Nitrogen fertilizers, Congresses,Soils-- Nitrogen content, Congresses
2. Nitrogen economy in tropical soils
Author: edited by N. Ahmad
Library: Central Library of Shahrekord University (Chaharmahal va Bakhtiari)
Subject: Soils, Nitrogen content, Tropics, Congresses,Crops and nitrogen, Tropics, Congresses,Nitrogen fertilizers, Tropics, Congresses
