F. Barbieri

Upper Oligocene - Lower Miocene Microfacies from a Caribbean Seamount (Aves Swell) with Infiltrated Pleistocene Foraminifera F. Barbieri [1] ; F. Medioli [2] [1] Istituto de Geologia, Universitá degli Studi di Parma, Italia [2] Department of Geology, Dalhousie University, Halifax, Nova Scotia, Canada Localización: Revista española de micropaleontología, ISSN 0556-655X, Vol. 4, Nº. 1, 1972, págs. 97-103 Idioma: inglés Texto completo no disponible (Saber más ...)

The Thesis on the Impossibility of Economic Rationality in Socialism The Nature of the Economic Problem The debate on economic calculation addresses the problem of the rational allocation of scarce resources in complex (with highly developed divisions of labor) and dynamic economies (subjected to continuous changes in preferences, products, techniques, resources, and costs).

Pesticides are used worldwide to control arthropod parasites in cattle herds. The indiscriminate and/or inappropriate use of pesticides without veterinary guidance is a reality in several countries of South America. Improper pesticide use increases the chances of contamination of food and the environment with chemical pesticides and their metabolites. Reduction of these contamination events is an increasing challenge for those involved in livestock production.