ਜਲ - ਪ੍ਰਦੂਸ਼ਣ : ਕੁ - ਪ੍ਰਭਾਵ ਅਤੇ ਰੋਕਥਾਮ ਦੇ ਘਰੇਲੂ ਤਰੀਕੇ /

Jal pradushan : Ku Prabhav ate roktham de Gharelu Tarike / Batis, Savita & ਸਵਿਤਾ ਬਾਤਿਸ਼

By: Contributor(s): Material type: TextTextLanguage: Panjabi Publication details: Ludhiana : Punjab agricultural university, 2006.Description: 18 p. ; 16 cmSubject(s): DDC classification:
  • 363.7394 BAT
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