Reference Base Search Results Search results for References by johnson, r.h. back to search page Sort order: ------------------- Date ASC Author normal    Bean, E.; Johnson, R.H., 1944. Fecundity in the Chicago Zoo - its population is swelled by four births in 24 hours. Life Magazine 17 (15) Oct 9: 41-42,44, 6 images File available   details back to search page Sort order: ------------------- Date ASC Author normal