Observations on the coccidae of Egypt
Hall, W.J.
Observations on the coccidae of Egypt - Cairo 1922 - 1-54 p. - Virginia Agricultural Experiment Sation. Technical Bulletin No. 22 .
Observations on the coccidae of Egypt - Cairo 1922 - 1-54 p. - Virginia Agricultural Experiment Sation. Technical Bulletin No. 22 .