181. Volume 18, Index : Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
182. Volume 18, Number 1: Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
183. Volume 18, Number 2: Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
184. Volume 18, Number 3: Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
185. Volume 18, Number 4: Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
186. Volume 18, Number 5: Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
187. Volume 18, Number 6: Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
188. Volume 18, Number 7: Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
189. Volume 18, Number 8: Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
190. Volume 18, Number 9: Plant world Collection: Core Historical Literature of Agriculture Publisher: Plant World Association Publication Place: Baltimore, Md. Date: 1915 Format: Issue
