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