. . . . . "The plants of Michigan; simple keys for the identification of the native seed plants of the state" . "The plants of Michigan; simple keys for the identification of the native seed plants of the state"@en . . "The plants of Michigan simple keys for the identification of the native seed plants of the state"@en . . . . . . . . . "The plants of Michigan : simple keys for the identification of the native seed plants of the state"@en . . . . . "The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State"@en . "The Plants of Michigan : simple keys for the identification of the native seed plants of the state"@en . . "The plants of Michigan"@en . "Handbooks and manuals"@en .