Commercial fertilizers /
by P.L. Hibbard.
APA Citation
Hibbard, P. L. (Paul Llewellyn). (1919). Commercial fertilizers. Berkeley, Cal.: Agricultural Experiment Station.
MLA Citation
Hibbard, P. L. (Paul Llewellyn), 1866-1947. Commercial Fertilizers. Berkeley, Cal.: Agricultural Experiment Station, 1919.
Warning: These citations may not always be complete (especially for serials).