SENEGAL (1972) Oil slick approaching beach*. Containment of desert*. Unaddressed FDC with cachet and thematic cancel. Protection of the environment. Scott No C113, Yvert No PA119.
AVAILABLE AT $15
SENEGAL (1976) People planting trees*. Unaddressed FDC with cachet. Scott No 431. Reclamation of Sahel.
AVAILABLE AT $15
AVAILABLE AT $10
GREAT BRITAIN (2000) Wetlands*. Ants*. Solar cells*. Leave in water*. Addressed FDC with cachet and thematic cancel. Scott Nos 1902-5.
AVAILABLE AT $12
UNITED NATIONS (2001) Butterfly*. Goose*. Penguin*. Tomato under glass jar*. Palm tree*. Desalinization plant. Hand planting seedling*. Unadressed FDC with cachet and thematic cancel. Scott Nos 812-5. Climate change.
AVAILABLE AT $10
BELGIUM (1974) Environmental protection. FDC with cachet and thematic cancel. Scott No 865, Yvert No 1700.
AVAILABLE AT $5