Heckert, John Walter, 1872–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2146481A
- pdbooks.info ID: 118661
John Walter Heckert Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| The organization of instruction materials: with special relation to the elementary school curriculum | 1917 | Author | |  | |  | |    
| |