Low tunnel protected cultivation of organically grown strawberry (winter dawn) was carried out to standardize the cladding material and the height of structure. . Explore the latest full-text research PDFs, articles, conference papers, preprints and more on FICTION. Find methods information, sources, references or. Año XIV Número 52 Abril ÍNDICE · 1. Introducción La evolución histórica de los conceptos matemáticos, su enseñanza y todos aquellos aspectos que permitan conocer.