1 Subjects: “...,Syntactic skills,Elicited production,Augmentative and Alternative Communication,Comprehension test...”

2 Subjects: “... communication,Oral production strategies,Lingua Franca,Plurilingual competences,Plural Approaches,Elementary...”

3 Subjects: “...craft product...”

4 Subjects: “...speech production...”

5 Subjects: “...craft product...”

6 Subjects: “...productive-receptive skills...”

7 Subjects: “...food production...”

8 Subjects: “...cleaner production (CP)...”

9 Subjects: “...Debreu-Farrell productivity index...”

10 Subjects: “...productive-receptive skills...”