Butler's Lifecycle & Doxey's Irridex

[@afsarahmad1196]

The explanation of the both models are really great.

[@pocahontashiaka2057]

so helpful and wonderfully explained thank you

[@waju_the_traveller]

Thankyou very much dr Robinson, i just love your videos & the way you explain it helps alot in my preparation. You are amazing teacher keep uploading new videos.
Thankyou very much.

[@samuelkarikari188]

Oh great
Theories understood now

[@christophermadondo1950]

Well explained!

[@nidhin2249]

Very good explanation mam