1.
Boll Soc Ital Biol Sper
; 45(18): 1218-20, 1969 Sep 30.
Article
in Italian
| MEDLINE
| ID: mdl-5393971
2.
J Water Pollut Control Fed
; 41(5): 725-37, 1969 May.
Article
in English
| MEDLINE
| ID: mdl-5783648