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Phe monde social de fourmis du globe compare & celui de i"homme. v, 4. 
Alliences et guerres paraviose, lestobiose, esclavagesime Geneve, Librairie 
meemandie, 1923. 172 p., illus., 'y pl. 
vacgat . ae ; 
On the dispersion of the pink boll worm in Egypt. Cairo, Government Press, 
ss 20 p. (Egypt. Minister of Agriculture. Tech. and Sci. Service. Bul. 
eu, 
apalek, Fr. 
_  fam.Perlidae, suofan. Perlirae. Monographische Revision. Bruxelles, Hayez 
_ impr, des Academies, 1923. 193 p., illus. (Collections Zoologiques. Edm. 
_ de Selys Longchamps. Catalogue syst. et descrip. fasc. 4 (Plecoptéres II. 
' .¥am. Perlidae). 
@ncefield, D. FE. 
_ Linkage relations of the sex-linked characters in Drosophila obscura. 
Meanew Yorks, 1922. In Genetics, v. 7, p. 335-384, July, 1922. Thesis 
a (Ph. D.), Columbia University. 
ttey, F. 1. 
- Arsenical spray experiments for the control of codling moth in pears at 
© (¥nion of South Africa Dept. Sci. Bul. 26.) 
Sgorini, Imciano, and Teodoro, G. 
_ tezioni di biologia applicrta alla sericoltura. Padova, Tipografia del 
meecaminareo, 1923. v. 2, 14 p., illus. 
pewer, at's 
| Die Werberkmechte dev Erde. Systematische Bearbeitung der bisher 
_  >dekamnten Opiliones... Jena, Verlag von Gustav Fischer, 1923. llop., 
illus. 
aomney, I. S. 
_ he head capsule of Coleoptera. Urnam, I11., poblished by the University 
of Illinois, Jan., 1923. 104 p., 26 pl, (Illinois Biol. Monog., v. 8, 
aL.) | 
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Elsenturg. Pretoria, Goverrment Printing and Stationery Office, 1922. le p 

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