By Robst J.   VanGilder J.   in Economics Letters

ISSN:0165-1765|69|3|407-413

Elsevier‎(2000)‎

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By Robst J.   VanGilder J.   Polachek S.   in Economics of Education Review

ISSN:0272-7757|22|1|59-67

Elsevier‎(2003)‎

Access to resources Favorite 15.982044