The American Nation Yesterday and Today
The American People and Nation. By Rolla M. Tryon ... Charles R. Lingley ... and Frances Morehouse ... Revised Edition [of the Work by R. M. Tryon and C. R. Lingley].
Pteridophyta of Peru
Pteridophyta of Peru
16. Thelypteridaceae
13. Pteridaceae - 15. Dennstaedtiaceae
Pteridophyta of Peru
17. Dryopteridaceae
Pteridophyta of Peru
Edith Scamman (1882-1967)
1. Ophioglossaceae - 12. Cyatheaceae
The Social Sciences As School Subjects
Index to Names of Cyatheaceae, 1753-1970
The American people and nation. Part II
Charles Alfred Weatherby, Teacher and Counselor
The Teaching of History in Junior and Senior High Schools
22. Marsileaceae - 28. Isoetaceae
Household Manufactures in the United States, 1640-1860; A Study in Industrial History
A Study of Variation in the Cytotypes of Dryopteris Spinulosa