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|Posté le: Dim 9 Juil - 10:35 (2017) Sujet du message: Bulletins Issued By Ontario Department Of Agriculture 193
Excerpt from Bulletins Issued by Ontario Department of Agriculture, 1930-1933: Nos. 351 to 373
We are told by those who have made a careful study of the question over a period of years, and, over wide areas representing all the varying weather and cli matic conditions of the country, that the annual levy made by insects on economic vegetation, in America, amounts to the enormous sum of one billion dollars. And, in addition to this another toll is taken by fungi, pathogenic bacteria and weeds, giving a further combined loss which must be equally appalling.
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bound: 1002 pages
publisher: Forgotten Books (May 23, 2017)
isbn: 0259933686, 978-0259933687,
weight: 2.9 pounds (