Students (3) Estudio (3) analyse (2) Women (2) Raw materials (2) Pottery (2) Petrology (2) Men (2) Diffraction (2) Analysis (2) Estudiantes (2) puits (1) enseignement secondaire (1) région (1) matière première (1) papier (1) modèle (1) calcaire (1) effet (1) climat (1) grotte (1) abords (agglomération) (1) Castro-Urdiales (1) Education (Secondary) (1) Methods (1) Programs (1) Classrooms (1) X-rays (1) Variations (1) Universities and colleges (1)