Natural resources surveys.

Resource inventory & baseline study methods for developing countries / by: (Language materials, printed)

Natural resources information for economic development : = a study / by: (Language materials, printed)

Ecosystem geography / by: (Language materials, printed)

Ecological surveys.

Natural resources surveys- Developing countries.

Ecology- Developing countries.

Natural resources surveys.

Environmental monitoring- Developing countries.

Ecosystem management.

Ecological surveys- Developing countries.

Natural resources- Developing countries.

Environmental monitoring.

Natural resources.

Ecology.

Biotic communities- Classification.