In appearance and general set-up this new "Fertilizer Guide" is similar to the first edition of 1967 because in our opinion it is doubtful whether changes would have resulted in improvements. The c…
Agriculture in the United States during the last twenty years has benefited from more revolutionary developments than at any time or place in history. These changes have been the result of an unpre…
Auch der vorliegende Band, der dem 8. Bande des Handbuches unmittel- bar folgen sollte, hat in seiner Herausgabe infolge unvorhergesehener Um- stände eine etwas unliebsame Verzögerung erlit…