2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149424We review the properties of classical p-brane solutions to supergravity theories, i.e. solutions that may be interpreted as Poincare-invariant hyperplanes in spacetime. Topics covered include the distinction between elementary/electric and solitonic/magnetic solutions, examples of singularity and global structure, relations between mass densities, charge densities and the preservation of unbroken supersymmetry, diagonal and vertical Kaluza-Klein reduction families, Scherk-Schwarz reduction and domain walls, and the classification of multiplicities using duality symmetries.53 pages, 4 figures, Latex, uses epsf.sty. Lectures presented at 1996 ICTP Summer School, Trieste. (References added.)High Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext