THE PTERIDOPHYTE FLORA OF IOWA.PECK JH.1976; PROC. IOWA ACAD. SCI.; U.S.A.; DA. 1976; VOL. 83; NO 4; PP. 143-160; BIBL. 1 P.Article

AN ANNOTATED BIBLIOGRAPHY TO THE LITERATURE ON BRYOPHYTES IN IOWA.PECK JH.1976; PROC. IOWA ACAD. SCI.; U.S.A.; DA. 1976; VOL. 82; NO 3-4; PP. 198-202Article

PARIS BASIN EOCENE TYPE SPECIMENS AT THE UNIVERSITY OF CALIFORNIA.PECK JH.1957; J.CONCHYLIOL.-FR; FRA; 1957, VOL. 97, P. 67 A 81Miscellaneous

NEW STATE AND COUNTY BRYOFLORA RECORDS FROM IOWA.PECK JH.1977; BRYOLOGIST; U.S.A.; DA. 1977; VOL. 80; NO 2; PP. 352-353; BIBL. 5 REF.Article

SILURIAN AND DEVONIAN STRATIGRAPHY IN THE CLINTON QUADRANGLE, CENTRAL MASSACHUSETTS.PECK JH.1976; GEOL. SOC. AMER., MEM.; U.S.A.; DA. 1976; NO 148; PP. 241-251; BIBL. 16 REF.Article

ADDITIONAL IOWA BRYOPHYTE REFERENCESPECK JH.1982; PROC. IOWA ACAD. SCI.; ISSN 0085-2236; USA; DA. 1982; VOL. 89; NO 1; PP. 7-10; BIBL. 30 REF.Article

BRYOXIPHIUM NORVEGICUM IN IOWAPECK JH.1980; BRYOLOGIST; ISSN 0007-2745; USA; DA. 1980; VOL. 83; NO 4; PP. 535; BIBL. 3 REF.Article

BRYOFLORA OF WOODMAN HOLLOW, IOWAPECK JH.1978; BRYOLOGIST; USA; DA. 1978; VOL. 81; NO 3; PP. 454-457; BIBL. 7 REF.Article

BIBLIOGRAPHY OF IOWA AQUATIC AND WETLAND PLANT LITERATUREPECK JH; ROOSA DM.1983; PROCEEDINGS OF THE IOWA ACADEMY OF SCIENCES; ISSN 0085-2236; USA; DA. 1983; VOL. 90; NO 2; PP. 72-77Article

SITE SELECTION FOR RADIOACTIVE WASTE DISPOSAL IN GEOLOGIC FORMATIONPECK JH; BRIEDIS J.1979; PROC. AMER. POWER CONF.; USA; DA. 1979; VOL. 41; PP. 215-219; BIBL. 7 REF.Conference Paper

BATRACHOSPERMUM ROTH. (RHODOPHYTA) A GENUS OF RED ALGAE NEW TO IOWA.ROEDER DR; PECK JH.1977; PROC. IOWA ACAD. SCI.; U.S.A.; DA. 1977; VOL. 84; NO 4; PP. 133-138; BIBL. 22 REF.; 17 ILL.Article

EQUISETUM X LITORALE RECORDED FOR MINNESOTAPECK JH; SWANSON SD.1978; AMER. FERN J.; USA; DA. 1978; VOL. 68; NO 3; PP. 96Article

THE SELAGINELLA APODA COMPLEX IN IOWA.PECK JH; BUCK WR.1978; AMER. FERN J.; U.S.A.; DA. 1978; VOL. 68; NO 1; PP. 29Article

A CHECKLIST OF THE VASCULAR FLORA OF LEE COUNTY, IOWAPECK JH; LAMMERS TG; HAGLAN BW et al.1981; PROC. IOWA ACAD. SCI.; ISSN 0085-2236; USA; DA. 1981; VOL. 88; NO 4; PP. 159-171; BIBL. 42 REF.Article

FAULTING AND SEISMICITY IN THE ANNA OHIO REGION.THOMPSON SN; PECK JH; PATTERSON AR et al.1976; GEOL. SOC. AMER., ABSTR. PROGRAMS; U.S.A.; DA. 1976; VOL. 8; NO 6; PP. 1139Conference Paper