Topical Studies for Deuteronomy 8:9:
Copper {Nave's Topical Bible}
Hills {Nave's Topical Bible}
Iron {Forerunner Commentary}
Iron {Nave's Topical Bible}
Iron {Torrey's Topical Textbook}
Will {Forerunner Commentary}
Will {Nave's Topical Bible}
Rocks {Torrey's Topical Textbook}
Ever {Forerunner Commentary}