| • ecology and environmental studies | |
| पारिस्थितिकी: ecology oecology eclogy environics | |
| और: More yet too much further else also and | |
| अध्ययन: learning study course instruction reading science | |
पारिस्थितिकी और पयार्वरण अध्ययन अंग्रेज़ी में
[ paristhitiki aur payarvaran adhyayan ]
