CLARK, JOHN R.
Teacher's manual for book two, fifth and sixth grades, Modern school arithmetic, new edition. By John R. Clark, Arthur S. Otis & Caroline Hatton Clark.
CLARK, JOHN R. Teacher's manual for book two, fifth and sixth grades, Modern school arithmetic, new edition. By John R. Clark, Arthur S. Otis & Caroline Hatton Clark. © 8Nov37; AA251986. John R. Clark & Caroline Hatton Clark (A) & Marlene Otis (W); 1Mar65; R356676.
John R. Clark & Caroline Hatton Clark|A||Marlene Otis|W