Agenda item 73: Continuation of suspension of nuclear and thermo-nuclear tests and obligations of States to refrain from their renewal (A/4801 and Add.1, A/C.1/283/Rev.1, A/C.1/L.288). Agenda item 72: The urgent need for a treaty to ban nuclear weapons tests under effective international control (A/4799, A/C.1/L.280, A/C.1/L.288).