1. Agricultural extension
پدیدآورنده : Ban, Anne W.Van den
کتابخانه: Library and Documentation Center of Iranian Research Organization for Science and Technology (Tehran)
موضوع : $AAgricultural extension work
رده :
S
544
.
B2513
1988
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2. Agricultural extension
پدیدآورنده : Van Den Ban, Anne W.
کتابخانه: (Semnan)
موضوع : ، Agricultural extension work
رده :
S
544
.
B3A4
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