Contribuição para o estudo do declínio do ²²⁷Th.
Series: Estudos, ensaios e documentos,; 121
Published: 1966
Place of publication: Lisboa
Language: por
Number of pages: 156
Subjects: Thorium -- Isotopes -- Decay.
Notes: Bibliography: p. 153-156.
At head of title: Junta de Investigações do Ultramar.
Summary in Portuguese and French.