CAMERON, R.A.D. (2003): Keys for the identification of land snails in the British Isles. – Field Studies Council Publications (Occasional Publication 79) (Shrewsbury): iii + 82 pp. [ISBN 1-85153-890-9]. MARTINEZ-ORTI, A. & F. ROBLES (2003): Moluscos continentales de la Comunidad Valenciana. – Valencia (Generalitat Valenciana Consellaria de Territori i Habitatga): 259 pp. [ISBN 84-482-3524-X].