31 English language 15 History 12 Grammar 11 Study and teaching 10 Composition and exercises 7 Spellers 6 Biology 6 Orthography and spelling 5 Phonetics 4 Reading (Elementary) 3 Anthropology 3 Chemistry 3 Lecture (Enseignement primaire) 3 Readers (Elementary) 3 Readers (Primary) 3 Reading (Primary) 2 Anthropologie 2 Art 2 Culturele antropologie 2 Language arts (Elementary) 2 Noun 2 Picture dictionaries, English 2 Programmed instruction 2 Readers 2 Reading 2 Remedial teaching 2 Rhetoric 2 Study and teaching (Secondary) 1 Air pilots 1 Allied occupation,