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Wege zur Natur

Eine Einführung in micrologiche studien für anfänger From a generous donation by Thorsten Perl and friends of the digitalized collection of works by and about Dr. Raoul H. Francé and his wife Annie Francé-Harrar.

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Die Lichtsinnesorgane der Algen

Studien zum Ausbau der vegetabilen Reizphysiologie I From a generous donation by Thorsten Perl and friends of the digitalized collection of works by and about Dr. Raoul H. Francé and his wife Annie Francé-Harrar.

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Mikrokosmos

Zeitschrift für angewandte Mikroskopie, Mikrobiologie, Mikrochemie und mikroskopische Technik From a generous donation by Thorsten Perl and friends of the digitalized collection of works by and about Dr. Raoul H. Francé and his wife Annie Francé-Harrar.

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Plants As Inventors

From a generous donation by Thorsten Perl and friends of the digitalized collection of works by and about Dr. Raoul H. Francé and his wife Annie Francé-Harrar.

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Global Soil Biodiversity Atlas

This fully illustrated publication details what we presently know about life the soil and the complex ecosystem within which life is sustained. Of course, and here is the rub, when the soil is described as being a very complex living ecosystem, the information flies in the face of Industrial Agriculture. Modern farmers, with the help of their agents, have all but declared war on soil life by the use of petrochemical fertilizers and pesticides.
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Prairie Plants and Their Environment

This book is the product of a lifetime of ecological research "to clarify some of the many problems presented by this vast natural unit of vegetation, to better understand the importance and significance of grassland and its utilization, and to furnish a permanent record of a rapidly vanishing vegetation."
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