1. Efficient use of fertilizers in agriculture
Author:
Library: Central Library of Agricultural (Tehran)
Subject: $AFertilizers$BCongresses,$ACrops$BNutrition -- Congresses,$ACrop yields$BCongresses
Classification :
S
631
.
3
.
S96
1983
2. Efficient use of fertilizers in agriculture
Author:
Library: Library and Documentation Center of Kurdistan University (Kurdistan)
Subject: ، Fertilizers- Congresses,، Crops- Nutrition- Congresses,، Crop yields- Congresses
Classification :
S
631
.
3
.
E4
1983
