Informe ambiental 1973.
Informe ambiental 1973.
- Santurce, P. R. Junta de Calidad Ambiental 1973.
- ii, 191 p. ill. 30 cm.
Pollution--Periodicals.--Puerto Rico
Conservation of natural resources--Periodicals.--Puerto Rico
Puerto Rico
TD 180 .5 / P97 1973
Pollution--Periodicals.--Puerto Rico
Conservation of natural resources--Periodicals.--Puerto Rico
Puerto Rico
TD 180 .5 / P97 1973