J. Spears

发表

Replenishing the world's forests: tropical reforestation: an achievable goal?

J. Spears, 1983 .

Tropical forests: a call for action. Part III: country investment profiles. Report of an International Task Force convened by the World Resources Institute the World Bank and the United Nations Development Programme.

R. Buckman, P. Nogueira-Neto, C. Pereira, 1985 .

SUSTAINABLE FOREST MANAGEMENT: AN EVOLVING GOAL

J. Spears, 1999 .

A review of tropical forestry and agroforestry problem areas and policy research needs and the planned response of the CGIAR system

S. Scherr, A. Izac, R. Byron, 1995 .

Role of forestation as a sustainable land use and strategy option for tropical forest management and conservation and as a source of supply for developing country wood needs.

K. F. Wiersum, J. Spears, 1984 .

Agroforestry: a development bank perspective.

J. Spears, 1987 .

Resources development and the new century: forestry.

J. Spears, Ayensu Es, 1985 .

Containing tropical deforestation : a review of priority areas for technological and policy research

J. Spears, 1988 .