| Title | Geographic Covariation of Hosts and Parasites: Evidence from Populus and Pemphigus | 
| Author | Sokal, R.R., R.S. Unnasch | 
| Binding | PAMPHLET | 
| Publisher | Z. Zool. Syst. Evolut.-forsch, 26 | 
| Publisher Year | 1988 | 
| Condition | Very Good | 
| Description | Reprinted from Z. Zool. Syst. Evolut.-forsch, 26, 1988, p. 73-88. Ownership signature of H.L. Carson. First separate edition. Offprint. Original wrappers. * |