00702cam a22001931  4500001001300000003000400013005001700017008004100034010001700075035002000092040005200112042001200164050002100176100002400197245007600221260003700297300006000334410011400394agr23000105 DLC20260227110943.0880711s1921    ua bf        f000 0 eng c  aagr23000105   a(OCoLC)18198744  aLibrary, U.S. Dept. of AgriculturecCUdCUdDLC  apremarc00aS341b.A4 no. 171 aHall, Wilfrid John.14aThe Hibiscus mealy bug (Phenacoccus hirsutus, Green),cby W.J. Hall ...  aCairo,bGovernment Press,c1921.  a1 p. l., 28 p., 1 l.bfront. (fold. map) VI pl.c27 cm.10aEgypt.bWizārat al-Zirāʻah.bTechnical and Scientific Service.tBulletinvno. 17.pEntomological section