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John H Gehrs
John H Gehrs is the author of "The Principles of Agriculture for High Schools" and "Productive Agriculture".
Books by John H Gehrs
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The Principles of...
Gehrs, John H.
Paperback:
$45.75
The Principles of...
Gehrs, John H.
Paperback:
Productive Agricu...
Gehrs, John H.
Hardback:
$41.56