This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the "public domain in the United States of...
Dans ce livre, Pierre-Hubert Nysten nous offre une étude complète sur les vers à soie, et en particulier sur les maladies qui les affectent. Il propose des moyens de prévention de ces maladies, ainsi...
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures,...
This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words. This book may have occasional...