Magnetic studies of natural goethite samples from Tharsis, Huelva, Spain

Marcos A. E. Chaparro, Ana M. Sinito, Juan C. Bidegain, Raúl E. de Barrio

219-230

Archaeological calibration of remagnetized volcanic rocks from pottery firing kilns in Cuentepec, Morelos, Mexico

L. M. Alva-Valdivia, J. A. González-Rangel, A. M. Soler–Arechalde, S. L. López-Varela, H. López–Loera

231-241

The pyroclastic dikes of the Tertiary San Luis Potosí volcanic field: Implications on the emplacement of Panalillo ignimbrite

José Ramón Torres-Hernández, Guillermo Labarthe-Hernández, Alfredo Aguillón-Robles, Martín Gómez–Anguiano, José Luis Mata-Segura

243-253

Spectral signature of ultraviolet solar irradiance in Zacatecas

J. L. Pinedo V., F. Mireles G., C. Ríos M., L. L. Quirino T., J. I. Dávila R.

263-269

Radio bursts of very short duration: Fine structure of solar flare emissions

A. L. Méndez Berhondo, R. E. Rodríguez Taboada

271-276