"This book is composed mainly of selected parts of two separate essays written by the undersigned and published many years ago on two different occasions."--Pref. signed G. Thomann.
Master microform held by: LrI.
Reproduction
Microfiche. Chicago, Ill. : Library Resources, 1970. 1 microfiche ; 8 x 13 cm. (Library of American civilization ; LAC 10284).