[en] For the purpose to specify the scheme of ¹⁵¹Tb decay, energies, intensities of p-transitions and respectively balance of intensities and energies of ¹⁵¹Gd levels the spectra of e-γ-coincidences, γ-rays, and internal conversion electrons in the ¹⁵¹Tb→¹⁵¹Gd decay are investigated. Radioactive terbium sources have been obtained in the reactions of deep tantalum (erbium) splitting by protons at 660 MeV. Spectra of ¹⁵¹Tb γ-rays have been measured by Ge and Ge(Li) detectors. With high accuracy the relative γ-ray intensities are determined, 43 low-intensity γ-transitions have been found for the first time in the energy field from 200 to 2100 keV. A number of transitions observed by other authors has not been revealed. ¹⁵¹Tb internal conversion spectra have been measured by Si(Li) detectors. Relative intensities of internal conversion electrons transitions with energies from 239.6 to 1689.7 keV are determined for the first time. The values of relative intensities of K-conversion electron transitions 395.5, 443.9, 467.6, 479.4, 616.6 and 703.8 keV are specified. Multipolarities for many γ-transitions are determined, for 21 from them - for the first time. ¹⁵¹Gd additional states are introduced. Spins and parities of ¹⁵¹Gd excited states are determined by the γ-transition multipolarities data. It is pointed out that so far there is no satisfactory theoretical description of ¹⁵¹Gd excited states properties