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61by Kent, Thomas H. (Thomas Hugh), 1934-Contributors: “...Petersen, Peter C.; Shires, Thomas K....”
Published 1981
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62by Kent, Thomas H. (Thomas Hugh), 1934-Contributors: “...Petersen, Peter C.; Shires, Thomas K....”
Published 1981
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63by Kent, Thomas H. (Thomas Hugh), 1934-Contributors: “...Petersen, Peter C.; Iowa Ornithologists' Union Records Committee...”
Published 1992
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64by Fuller, CharlesContributors: “...Petersen, Peter C.; Iowa Ornithologists' Union Records Committee...”
Published 1987
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65by Porter, Diane C.Contributors: “...Petersen, Peter C.; Sinclair, Jim; Fuller, James L...”
Published 1991
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66by Iowa Ornithologists' Union; Fuller, James L.Contributors: “...Black, Gladys; Petersen, Peter C.; Scheib, James; Scheib, Sharon...”
Published 1992
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67by Iowa Ornithologists' Union Records CommitteeContributors: “...Kent, Thomas H. (Thomas Hugh), 1934-; Petersen, Peter C....”
Published 1996
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68by Iowa Ornithologists' Union; Fuller, James L.Contributors: “...Dunkle, Sam; Petersen, Peter C.; Schoenewe, Lee A.; Felsing, Paul...”
Published 1991
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69by Kent, Thomas H. (Thomas Hugh), 1934-Contributors: “...Bendorf, Carl J.; Newlon, Michael C.; Petersen, Peter C.; Staudt, Thomas J....”
Published 1983
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70by Iowa Ornithologists' Union Records CommitteeContributors: “....; Petersen, Peter C....”
Published 1972
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71by Fuller, James LContributors: “...Kent, Thomas H. (Thomas Hugh), 1934-; Armstrong, Eloise; Armstrong, Eugene; Dorrance, Dan; Petersen...”
Published 1995
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72by Crocker, Edwin G.Contributors: “...Black, Gladys; Petersen, Peter C.; Thornton, Ruth; Galvin, Ila May; Galvin, Garold; Galvin, Ardiss...”
Published 1980
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73by Dinsmore, Stephen J.Contributors: “...Kent, Thomas H. (Thomas Hugh), 1934-; Myers, Robert K.; Petersen, Peter C.; Proescholdt, Beth...”
Published 1988
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74by Kent, Thomas H. (Thomas Hugh), 1934-Contributors: “...Cecil, Robert I.; Cummins, Raymond L.; Johnson, Ann; Petersen, Peter C.; Pinkston, Randall, 1956...”
Published 1992
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75by Kent, Thomas H. (Thomas Hugh), 1934-Contributors: “...Bendorf, Carl J.; Moore, Francis L.; Myers, Robert K.; Petersen, Peter C.; Proescholdt, Beth...”
Published 1984
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76by Peiser, Richard H.Contributors: “...Kent, Thomas H. (Thomas Hugh), 1934-; Allen, Reid I.; Johnson, Ann; Petersen, Peter C.; Pinkston...”
Published 1991
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77by Proescholdt, MarkContributors: “...Dinsmore, James J.; Allen, Reid I.; Cecil, Robert I.; Cummins, Raymond L.; Johnson, Ann; Petersen...”
Published 1991
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78by Dinsmore, Stephen J.Contributors: “..., Ann; Petersen, Peter C.; Pinkston, Randall, 1956-; Porter, Diane C.; Proescholdt, Mark; Iowa...”
Published 1990
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79by Ernzen, PeterContributors: “...Kent, Thomas H. (Thomas Hugh), 1934-; Silcock, W. Ross; Padelford, Babs; Padelford, Loren; Petersen...”
Published 1994
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80by Armstrong, EloiseContributors: “....; Myers, Robert K.; Newlon, Michael C.; Petersen, Peter C.; Proescholdt, Beth; Staudt, Thomas J.; Zaletel...”
Published 1983
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