Columbia subject headings:
Harvard subject headings:
Environmental protection--Peru--San Martín (Department)
Environmental protection--Peru--San Martín (Dept.)
Natural resources--Peru--San Martín (Department)
Natural resources--Peru--San Martín (Dept.)
San Martín (Peru : Department)
Princeton subject headings:
Environmental protection--Peru--San Martín (Dept.).
Natural resources--Peru--San Martín (Dept.).
San Martín (Peru : Department)