Nitrogen cycle.

Mineral nitrogen in the plant-soil system / by: (Language materials, printed)

Plants and nitrogen / by: (Language materials, printed)

Biology of the nitrogen cycle / by: (Language materials, printed)

Nitrogen in the Marine Environment by: (Language materials, printed)

Biology of the nitrogen cycle by: (Language materials, printed)

15N tracing of microbial assimilation, partitioning and transport of fertilisers in grassland soils by: (Electronic resources)

Carbon and nitrogen cycling in soil by: (Electronic resources)

Plants- Metabolism.

Soil Science & Conservation.

Sustainable Development.

Carbon cycle (Biogeochemistry)

Climate Change.

Environmental Chemistry.

Nitrification.

Nitrogen cycle.

Nitrogen- Metabolism.

Nitrogen fertilizers.

Plants, Effect of nitrogen on.

Denitrification.

Marine biology.

Analytical Chemistry.

Nature Conservation.

Plant-soil relationships.

Soils- Nitrogen content.

Biodiversity.

Agriculture.