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.
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.
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.
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.
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.
In part written to refute the claim by the Chief of the US Department of Agriculture's Bureau of Soil, Milton Whitney, who claimed that all soils are inexhaustible of the minerals needed to grow crops. In the run-up to the…
Health of animals and men is linked to the mineral balance of the soil. Note: This file is not searchable, however it may display correctly on Safari browsers and in Preview. Adobe Reader may be used to view the searchable…