APA Style
Collings, Gilbert H., Feld, Werner J.. ().
Commercial fertilizers their sources and use .
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Chicago Style
Collings, Gilbert H., Feld, Werner J..
Commercial fertilizers their sources and use.
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,
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.
MLA Style
Collings, Gilbert H., Feld, Werner J..
Commercial fertilizers their sources and use.
:
,
.
.
Turabian Style
Collings, Gilbert H., Feld, Werner J..
Commercial fertilizers their sources and use.
:
,
.
.