00643cam a22002051  4500001001300000003000400013005001700017008004100034010001700075035001900092040002000111042001200131050001500143100002600158245016500184260003900349300001900388650001500407999001500422agr22000104 DLC20260227110942.0800910s1921    enk           000 0 eng    aagr22000104   a(OCoLC)6696888  aDLCcAzTeSdDLC  apremarc00aQH471b.P41 aPell, Charles Edward.14aThe law of births and deaths.cBeing a study of the variation in the degree of animal fertility under the influence of the environment.cBy Charles Edward Pell.  aLondon,bT. F. Unwin, ltd.c[1921]  a192 p.c23 cm. 0aFertility.  c8772d8772