What you should know about fertilizers.
Contributors: Canada. Agriculture Canada. Information Services.
Series: Publication (Canada. Agriculture Canada) -- 1709
Publisher: Information Services, Agriculture Canada
Published: 1981
Place of publication: Ottawa, Ont
Language: eng
Subjects: Agricultural chemicals -- Canada.; Fertilizers -- Canada.
Notes: Cover title.

Issued also in French under the title: Qu'en savez-vous? Les engrais.

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