. Über Stechmücken besonders deren europäische Arten und ihre Bekämpfung. Diptera; Insect pests -- Control. 207] IV. Maßnahmen gegen die Mücken. 207. Fig. 89. Grabenschaufel (nach Jesse P. Manahan).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Martini, Erich Christian Vilhelm, 1880-; Hamburgische Wissenschaftliche Stiftung. Leipzig, Verlag von Johann Ambrosius Barth

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdiptera, bookyear1920